Slide1 l.jpg
This presentation is the property of its rightful owner.
Sponsored Links
1 / 117

The Sagnac Effect and the Chirality of Space Time PowerPoint PPT Presentation

The Sagnac Effect and the Chirality of Space Time Prof. R. M. Kiehn, Emeritus Physics, Univ. of Houston www.cartan.pair.com [email protected] SPIE, San Diego Aug 25-30, 2007 This presentation consists of several parts 1. Fringes vs. Beats

Download Presentation

The Sagnac Effect and the Chirality of Space Time

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Slide1 l.jpg

The Sagnac Effect and the Chirality of Space Time

Prof. R. M. Kiehn, Emeritus

Physics, Univ. of Houston

www.cartan.pair.com

[email protected]

SPIE, San Diego Aug 25-30, 2007


Slide2 l.jpg

This presentation consists of several parts

1. Fringes vs. Beats


Slide3 l.jpg

This presentation consists of several parts

1. Fringes vs. Beats

2. The Sagnac effect and the

dual Polarized Ring Laser


Slide4 l.jpg

This presentation consists of several parts

1. Fringes vs. Beats

2. The Sagnac effect and the

dual Polarized Ring Laser

3. The Chirality of the Cosmos


Slide5 l.jpg

(And if there is time – a bit of heresy)

4. Compact domains of Constitutive

properties that lead to non-radiating

“Electromagnetic Molecules”


Slide6 l.jpg

(And if there is time – a bit of heresy)

4. Compact domains of Constitutive

properties that lead to non-radiating

“Electromagnetic Molecules”

with infinite Radiation Impedance ?!


Slide7 l.jpg

(And if there is time – a bit of heresy)

4. Compact domains of Constitutive

properties that lead to non-radiating

“Electromagnetic Molecules”

with infinite Radiation Impedance ?!

Or why an orbiting electron does not radiate


Slide8 l.jpg

1a. Fringes vs. Beats

1 = e i(k1• r - 1 t)2 = e i(k2• r - 2 t)

Superpose two outbound waves k1  k2, 1  2


Slide9 l.jpg

1a. Fringes vs. Beats

1 = e i(k1• r - 1 t)2 = e i(k2• r - 2 t)

Two outbound waves superposed: k = k1 - k2 = 1 - 2

1 + 2~2 cos(k•r/2 - ω•t/2)1


Slide10 l.jpg

Fringes vs. Beats

1 = e i(k1• r - 1 t)2 = e i(k2• r - 2 t)

Two outbound waves superposed: k = k1 - k2 = 1 - 2

1 + 2=2 cos(k•r/2 - ω•t/2)1

Fringes are measurements of wave vector variations k(t = constant, r varies)


Slide11 l.jpg

Fringes vs. Beats

1 = e i(k1• r - 1 t)2 = e i(k1• r - 2 t)

Two outbound waves superposed: k = k1 - k2 = 1 - 2

1 + 2=2 cos(k•r/2 - ω•t/2)1

Fringes are measurements of wave vector variations k(t = constant, r varies)

Beats are measurements of frequency variations: ω(r = constant, t varies)


Slide12 l.jpg

Phase vs. Group velocity

Phase Velocity = /k = C/n

C = Lorentz Speed

n = index of refraction


Slide13 l.jpg

Phase vs. Group velocity

Phase Velocity = /k = C/n

C = Lorentz Speed

n = index of refraction

Group Velocity = d/dk ~ /k

C/n  /k


Slide14 l.jpg

4 Propagation Modes

Outbound Phase

1 = e i(k1• r - 1 t)2 = e i(- k2• r + 2 t)

k =

k =


Slide15 l.jpg

4 Propagation Modes

Outbound Phase

1 = e i(k1• r - 1 t)2 = e i(- k2• r + 2 t)

k =

k =

Note opposite orientations of Wave and phase vectors


Slide16 l.jpg

4 Propagation Modes

Outbound Phase

1 = e i(k1• r - 1 t)2 = e i(- k2• r + 2 t)

k =

k =

Inbound Phase

3 = e i(k3• r + 3 t)4 = e i(- k4• r - 4 t)

k =

k =

Note opposite orientations of wave and phase vectors


Slide17 l.jpg

4 Propagation Modes

Mix Outbound phase pairs

or Inbound phase pairs

for Fringes and Beats.


Slide18 l.jpg

4 Propagation Modes

Mix Outbound phase pairs

or Inbound phase pairs

for Fringes and Beats.

Mix Outbound with Inbound phase pairs

to produce Standing Waves.


Slide19 l.jpg

4 Propagation Modes

Mix all 4 modes for

“Phase Entanglement”

Each of the phase modes has a 4 component

isotropic spinor representation!


Slide20 l.jpg

1b. The Michelson Morley interferometer.

The measurement of Fringes


Slide21 l.jpg

Most people with training in Optics know about the

Michelson-Morley interferometer.


Slide22 l.jpg

Viewing Fringes.


Slide23 l.jpg

The fringes require that the optical paths are equal to within a coherence length of the photons.

L = C • decay time ~ 3 meters for Na light


Slide24 l.jpg

Many are not familiar with the use of

multiple path optics (1887).


Slide25 l.jpg

1c. The Sagnac interferometer.

With the measurement of fringes (old)


Slide26 l.jpg

The Sagnac interferometer encloses a finite area,

The M-M interferometer encloses ~ zero area.


Slide27 l.jpg

The Sagnac interferometer responds to rotation

The M-M interferometer does not.


Slide28 l.jpg

1d. The Sagnac Ring Laser interferometer.

With the measurement of Beats (modern)

Has any one measured beats in a M M interferometer ??


Slide29 l.jpg

Two beam (CW and CCW linearly polarized)

Sagnac Ring with internal laser light source

Linear Polarized

Ring Laser

Polarization fixed by Brewster windows


Slide30 l.jpg

Dual Polarized

Ring Laser

Dual Polarized

Polarization beam splitters

4 Polarized beams –CWLH, CCWLH, CWRH, CCWRH

Sagnac Ring with internal laser light source


Slide31 l.jpg

Ring laser - Early design

Brewster windows for single linear polarization state

Rotation rate of the earth produces a beat signal of about 2-10 kHz depending on enclosed area.


Slide32 l.jpg

More modern design of Ring Laser


Slide33 l.jpg

Hogged out Quartz monolithic design


Slide34 l.jpg

Ring Laser gyro built from 2-beam Ring lasers on 3 axes


Slide35 l.jpg

These aircraft use (or will use) Ring Laser gyros


Slide36 l.jpg

These missiles use Ring Laser gyros


Slide37 l.jpg

Aerospace devices use ring Laser gyros


Slide38 l.jpg

Under water devices use ring Laser gyros


Slide39 l.jpg

2. The Sagnac effect and Dual polarized Ring lasers.


Slide40 l.jpg

Dual Polarized Ring Lasers

Non-reciprocal measurements with a

Q = ~ 1018

Better than Mossbauer


Slide41 l.jpg

Dual Polarized Ring Lasers

Non-reciprocal measurements with a

Q = ~ 1018

Better than Mossbauer

This technology has had little exploitation !!!


Slide42 l.jpg

Non-Reciprocal Media.

As this is a conference for Optical Engineers, who know that the speed of light can be different for different states of polarization, let me start out with the first, little appreciated, heretical statement:


Slide43 l.jpg

Non-Reciprocal Media.

As this is a conference for Optical Engineers, who know that the speed of light can be different for different states of polarization, let me start out with the first, little appreciated, heretical statement:

In Non-Reciprocal media,

the Speed of light not only depends upon polarization, but also depends upon the direction of propagation.


Slide44 l.jpg

Non-reciprocal Media

Faraday rotation or Fresnel-Fizeau

Consider Linearly polarized light passing through

Faraday

or Optical Active media


Slide45 l.jpg

Non-reciprocal Media

Faraday rotation or Fresnel-Fizeau

Consider Linearly polarized light passing through

Faraday

or Optical Active media

Exact Solutions given by E. J. Post 1962


Slide46 l.jpg

These concepts stimulated a search for apparatus which could measure the effects of gravity on the polarization of an EM wave,


Slide47 l.jpg

These concepts stimulated a search for apparatus which could measure the effects of gravity on the polarization of an EM wave,and ultimately to practical applications of a dual polarized ring laser.

Every one should read

E. J. Post

“The Formal Structure of Electromagnetics”

North Holland 1962 or Dover 1997


Slide48 l.jpg

The Faraday Ratchet can accumulate tiny phase shifts from multiple to-fro reflections.

The hope was that such a device could capture the tiny effect of gravity on the polarization of the PHOTON.


Slide49 l.jpg

The Faraday Ratchet can accumulate tiny phase shifts from multiple to-fro reflections.

The hope was that such a device could capture the tiny effect of gravity on the polarization of the PHOTON.

It was soon determined that classical EM theory would not give an answer to EM - gravity polarization interactions.


Slide50 l.jpg

More modern design of dual polarized Ring Laser


Slide51 l.jpg

Technique

Tune to a single mode.

If no intra Optical Cavity effects,

then get a single beat frequency

due to Sagnac Rotation.


Slide52 l.jpg

Tune to a single mode.

If no intra Optical Cavity effects,

then get a single beat frequency

due to Sagnac Rotation.

If A.O. and Faraday effects

are combined in the Optical Cavity,

then get 4 beat frequencies.


Slide53 l.jpg

Conclusion

The 4 different beams have

4 different phase velocities,

dependent upon

polarization and

propagation direction.


Slide54 l.jpg

Experiments conducted by V. Sanders and R. M. Kiehn in 1977, using dual polarized ring lasers verified that the speed of light can have a 4 different phase velocities depending upon direction and polarization. The 4-fold Lorentz degeneracy can be broken.

Such solutions to the Fresnel Maxwell theory, subject to a gauge constraint, were published first in 1979. After patents were secured, the full theory of singular solutions to Maxwell’s equations without gauge constraints was released for publication in Physical Review in 1991.

R. M. Kiehn, G. P. Kiehn, and B. Roberds,

Parity and time-reversal symmetry breaking, singular solutions and Fresnel surfaces,

Phys. Rev A 43, pp. 5165-5671, 1991.

Examples of the theory are presented in the next slides, which shows the exact solution for the Fresnel Kummer singular wave surface for combined Optical Activity and Faraday Rotation.


Slide55 l.jpg

Generalized Fresnel Analysis of Singular Solutions to Maxwell’s Equations (propagating photons)


Slide56 l.jpg

Generalized Fresnel Analysis of Singular Solutions to Maxwell’s Equations (propagating photons)

Theoretical existence of 4-modes of photon propagation

as measured in the dual polarized Ring Laser.


Slide57 l.jpg

The 4 modes correspond to:

1. Outbound LH polarization

2. Outbound RH polarization

3. Inbound LH polarization

4. Inbound RH polarization


Slide58 l.jpg

Fundamental PDE’s of Electromagnetism

A review

Maxwell Faraday PDE’s

Maxwell Ampere PDE’s


Slide59 l.jpg

Lorentz Constitutive Equations -- The Lorentz vacuum

Substitute into PDE,s get vector wave equation

Phase velocity


Slide60 l.jpg

EM from a Topological Viewpoint.

USE EXTERIOR DIFFERENTIAL FORMS, NOT TENSORS

Exterior differential forms, A, F and G, carry topological information.

They are not restricted by tensor diffeomorphisms

For any 4D system of base variables


Slide61 l.jpg

EM from a Topological Viewpoint.


Slide62 l.jpg

EM from a Topological Viewpoint.

USE EXTERIOR DIFFERENTIAL FORMS, NOT TENSORS

Exterior differential forms, A, F and G, carry topological information.

They are not restricted by tensor diffeomorphisms

F is an exact and closed 2-Form, A is a 1-form of Potentials.

G is closed but not exact, 2-Form. J = dG, is exact and closed.


Slide63 l.jpg

EM from a Topological Viewpoint.

USE EXTERIOR DIFFERENTIAL FORMS, NOT TENSORS

Exterior differential forms, A, F and G, carry topological information.

They are not restricted by tensor diffeomorphisms/

F is an exact and closed 2-Form, A is a 1-form of Potentials.

G is closed but not exact, 2-Form. J = dG, is exact and closed.

Topological limit points are determined by exterior differentiation

dF = 0generatesMaxwell Faraday PDE’s

dG = J generatesMaxwell Ampere PDE’s

For any 4D system of base variables


Slide68 l.jpg

EM from a Topological Viewpoint.

dF = 0generatesMaxwell Faraday PDE’s

dG = J generatesMaxwell Ampere PDE’s

A differential ideal (if J=0) for any 4D system of base variables


Slide69 l.jpg

EM from a Topological Viewpoint.

dF = 0generatesMaxwell Faraday PDE’s

dG = J generatesMaxwell Ampere PDE’s

A differential ideal (if J=0) for any 4D system of base variables

Find a phase function 1-form: =kmdxm dt

Such that the intersections of the 1-form,,and the 2-forms vanish

^F = 0 ^G = 0

Also require that J =0.


Slide70 l.jpg

^F = 0 ^G = 0 In Engineering Format become:

k × E − ωB = 0, k · B = 0,

k × H + ωD = 0, k · D = 0,

Six equations in 12 unknowns. !!

Need 6 more equations

The Constitutive Equations


Slide71 l.jpg

Constitutive Equation examples

Lorentz vacuum is NOT chiral,  = 0


Slide72 l.jpg

Constitutive Equation examples

Generalized Complex Constitutive Matrix


Slide73 l.jpg

Constitutive Equation examples

Generalized Complex Constitutive Matrix

Generalized Complex Constitutive Equation


Slide74 l.jpg

Chiral Constitutive Equation Examples

Generalized Chiral Constitutive Equation

[  ]  0

[  ] Gamma is a complex matrix.


Slide75 l.jpg

Chiral Constitutive Equation Examples

Diagonal Chiral Constitutive Equation

 Gamma is complex


Slide76 l.jpg

Chiral Constitutive Equation Examples

Diagonal Chiral Constitutive Equation

 Gamma is complex

The real part of Gamma represents Fresnel-Fizeau effects.

The Imaginary part of Gamma represents Optical Activity


Slide77 l.jpg

Chiral Constitutive Equation Examples

Diagonal Chiral Constitutive Equation

The Wave Speed does not depend upon Fresnel Fizeau  “Expansions”

(the real diagonal part).

The Wave Speed depends upon OA “expansions”,

(the imaginary diagonal part).

The Radiation Impedance depends upon both “expansions”.


Slide78 l.jpg

Chiral Constitutive Equation Examples

Fresnel-Fizeau  “rotation” + diagonal Chiral  “expansions”


Slide79 l.jpg

Chiral Constitutive Equation Examples

Fresnel-Fizeau  “rotation” + diagonal Chiral  “expansions”

Combination of Fresnel-Fizeau “rotation”, , about z-axis

and

Diagonal Optical Activity + Fresnel-Fizeau “expansion”, .


Slide80 l.jpg

Chiral Constitutive Equation Examples

Fresnel-Fizeau  “rotation” + diagonal Chiral  “expansions”

Combination of Fresnel-Fizeau “rotation”, , about z-axis

and

Diagonal Optical Activity + Fresnel-Fizeau “expansion”, .

WILL PRODUCE 4 PHASE VELOCITIES

depending on POLARIZATION and K vector


Slide81 l.jpg

This Chiral Constitutive Equation

Explains the Dual Polarized

Sagnac ring laser


Slide82 l.jpg

Sagnac Effect Fresnel Surface

The index of refraction has 4 distinct values depending upon direction and polarization.

Z axis: Index of refraction 4 roots =1/3  - 1/2


Slide83 l.jpg

3. The Chirality of the Cosmos


Slide84 l.jpg

3. The Chirality of the Cosmos

Definition of a chiral space

A chiral space is an electromagnetic system

of fields E, B, D, H

constrained by a complex 6x6 Constitutive Matrix

which admits solubility for a real phase function that satisfies both the Eikonal and the Wave equation.


Slide85 l.jpg

3. The Chirality of the Cosmos

Definition of a chiral space

A chiral space is an electromagnetic system

of fields E, B, D, H

constrained by a complex 6x6 Constitutive Matrix

which admits solubility for a real phase function that satisfies both the Eikonal and the Wave equation.

Hence any function of the phase function is a solution to the wave equation.


Slide86 l.jpg

3. The Chirality of the Cosmos

Definition of a chiral Vacuum

The chiral Vacuum is a chiral space

which is free from charge and current densities.

J = 0,  = 0


Slide87 l.jpg

3. The Chirality of the Cosmos

Definition of a chiral Vacuum

The chiral Vacuum is a chiral space

which is free from charge and current densities.

Can the Cosmological Vacuum be Chiral ?


Slide88 l.jpg

3. The Chirality of the Cosmos

Definition of a chiral Vacuum

The chiral Vacuum is a chiral space

which is free from charge and current densities.

Can the Cosmological Vacuum be Chiral ?

Can the chirality be measured ?


Slide89 l.jpg

The Lorentz Vacuum

For the Lorentz vacuum, it is straight forward to show that there is no Charge-Current density and the fields satisfy the vector Wave Equation.


Slide90 l.jpg

The Simple Chiral Vacuum

For the Lorentz vacuum, it is straight forward to show that there is no Charge-Current density and the fields satisfy the vector Wave Equation.


Slide91 l.jpg

Use Maple to solve more complicated cases:

Six equations 12 unknowns

k x E -  B = 0, k x H +  D = 0

Use Constitutive Equation to yield 6 more equations

Define

Technique: Use constitutive equations to eliminate, say, D and B

This yields a 6 x 6 Homogenous matrix in 6 unknowns.

The determinant of the Homogeneous matrix must vanish


Slide92 l.jpg

The determinant can be evaluated in terms of the 3 x 3 sub matrices of the 6 x 6 complex constitutive matrix and the anti-symmetric 3 x 3 matrix, [ n x ] composed of the vector, n = k /ω.The determinant formula is:

The general constitutive matrix can lead to tedious computations. A Maple program takes away the drudgery.


Slide93 l.jpg

Conformal off-diagonal chiral matrices

Simplified (diagonal )

Constitutive matrix for a chiral Vacuum

  • =  + i 

     =  1  =  1


Slide94 l.jpg

Conformal + Rotation chiral matrices

Simplified (diagonal  + Fresnel rotation ) Constitutive matrix for a chiral Vacuum

Leads to Sagnac 4 phase velocities


Slide95 l.jpg

Semi-Simplified Constitutive Matrix with Conformal + Rotation chiral submatrices

f = Fresnel Fizeau diagonal real part (“conformal expansion”)

ω = Fresnel Fizeau antisymmetric real part (“rotation”)

 = Optical Activity antisymmetric imaginary part (“rotation”)

 = Optical Activity diagonal imaginary part (“conformal expansion”)


Slide96 l.jpg

The Wave Phase Velocity and the

Reciprocal Radiation Impedance

depend upon

the anti-symmetric rotations,

and the conformal factors of the

complex chiral (off diagonal) part

of the Constitutive Matrix.


Slide97 l.jpg

The Wave Phase Velocity and the

Reciprocal Radiation Impedance

depend upon

the anti-symmetric rotations,

and the conformal factors of the

complex chiral (off diagonal) part

of the Constitutive Matrix.

(All isotropic conformal + rotation chiral matrices have a center of symmetry, unless the Fresnel rotation, ω, is not zero)


Slide98 l.jpg

As an example of the algebraic complexity, the HAMILTONIAN and ADMittance determinants are shown above for the semi-simplified case.


Slide99 l.jpg

Fresnel Fizeau Conformal f does not effect phase velocity

AO Conformal  modifies phase velocity

Fresnel Fizeau Rotation  modifies phase velocity

AO rotation  modifies phase velocity


Slide100 l.jpg

Fresnel Fizeau Conformal f does not effect phase velocity

AO Conformal  modifies phase velocity

Fresnel Fizeau Rotation  modifies phase velocity

AO rotation  modifies phase velocity

All factors give an effect on chiral admittance (cubed):


Slide101 l.jpg

Fresnel Fizeau Conformal f does not effect phase velocity

AO Conformal  modifies phase velocity

Fresnel Fizeau Rotation  modifies phase velocity

AO rotation  modifies phase velocity

All factors give an effect on chiral admittance (cubed):

IN fact it is possible for the admittance ADM to be ZERO,

But this implies the radiation impedance

Z goes to infinity (not 376.73 ohms) !!!


Slide102 l.jpg

The idea that chiral effects could cause the Admittance to go to Zero is startling to me.

Zero Admittance  infinite Radiation Impedance, Z !


Slide103 l.jpg

The idea that chiral effects could cause the Admittance to go to Zero is startling to me.

Zero Admittance  infinite Radiation Impedance, Z !

Can this idea impact antenna design?


Slide104 l.jpg

And now some heresy


Slide105 l.jpg

Zero Admittance  infinite impedance


Slide106 l.jpg

Zero Admittance  infinite impedance

What would be the effects of a chiral universe on Cosmology ???

?


Slide107 l.jpg

Zero Admittance  infinite impedance

What would be the effects of a chiral universe on Cosmology ???

Is the Universe Rotating as well as Expanding ?


Slide108 l.jpg

Zero Admittance  infinite impedance

What would be the effects of a chiral universe on Cosmology ???

Is the Universe Rotating as well as Expanding ?

Could the chiral effect be tied to dark matter -- where increased radiation impedance causes compact composites to bind together more than would be expected ??


Slide109 l.jpg

Zero Admittance  infinite impedance

What would be the effects of a chiral universe on Cosmology ???

Is the Universe Rotating as well as Expanding ?

Could the chiral effect be tied to dark matter -- where increased radiation impedance causes compact composites to bind together more than would be expected ??

-- Could the infinite radiation impedance be tied to compact composites such as molecules and atoms which do not Radiate ?


Slide110 l.jpg

Hopefully these questions will be addressed on Cartan’s Corner

Optical Black Holes in a swimming pool

http://www.cartan.pair.com


Slide111 l.jpg

Some Examples from Maple


Slide112 l.jpg

Real f = 0, ω = 0 Imag  = 1/3,  = 0


Slide113 l.jpg

Real f = 0, ω = 0 Imag  = 0, = 2


Slide114 l.jpg

Real f = 0, ω = 0 Imag  = 1/3,  = 1/3


Slide115 l.jpg

The 4-mode Sagnac Effect - with No center of symmetry

Real ω = 1/3, f = 0, Imag  = 1/6,  = 0


Slide116 l.jpg

Ebooks – Paperback, or Free pdfhttp://www.lulu.com/kiehn orhttp://www.cartan.pair.comemail: [email protected]


  • Login