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Booth № 6166. Femtosecond Ultra-Broadband Light Sources. Andrey V. Zamyatin. 4119 Twilight Ridge, San Diego, CA 92130, USA Tel:: (858) 876-3133 Fax:: (858) 630-2376 E-mail:: [email protected] URL:: www.dmphotonics.com. Introduction. Two broadband supercontinuum sources.

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Booth № 6166

Femtosecond Ultra-Broadband Light Sources

Andrey V. Zamyatin

4119 Twilight Ridge, San Diego, CA 92130, USA Tel:: (858) 876-3133 Fax:: (858) 630-2376

E-mail:: [email protected]:: www.dmphotonics.com


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Introduction

Two broadband supercontinuum sources

Jibe- white light continuum generator

(T:Sapphire laser)

Cannon- based on ultrafast fiber laser source


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Introduction

  • The generation of broadband supercontinuum spectra by injection of high-power ultrashort pulses into nonlinear optical media has been a subject of intensive research

  • When a high-intensity ultrashort pulse is focused into a transparent medium, a white-light continuum ranging from ultraviolet to infrared is generated


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Applications

  • optical parametric amplification

  • an optical metrology

  • an optical coherence tomography

  • materials characterization

  • pump-probe measurements


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Kerr effect

n(I)=n0 + n2I+…

n0- normal reflective index of the medium

n2- the nonlinear reflective index

Optical phase:ωL n/c


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Kerr effect

E(t) cos (ωt-kx) - electic field of a laser pulse

k= ωn/c –wavenumber

Taylor expansion around the peak of the ultrafast pulse:

E(t) cos((ω+ ξt)t - kx)

ξ - depends on the nonlinear refractive index, the pulse width, peak of power and distance travelled


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Generation of White light

Red wavelengths of the white light pulse travel faster than blue wavelengths



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Jibe S Jibe C

Spectral coverage

Nonlinear material

Sapphire CaF2

Jibe - WLCG

450-900 nm 350-750 nm


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Spectrum of white light continuum

Intensity

Wavelength, nm


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Femtosecond laser

R

Probe

Beam

B.S.

R

R

D

R

R

R

Pump

Beam

Harmonic Generator / OPA

Chopper

F.O.

Delay line

R

R

S

R

Pump-probe measurements

WLCG can be easily integrated to the pump-probe system

WLCG


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Pump-probe measurements

The result is a plot of time delay vs. absorption/ transmission

The typical three-dimensional data example of

Ni(II) tetraphenyltetrabenzoporphyrin (NiTPTBP)

in benzene


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Cannon –ultra-broadband light source

Ultra-Broadband Light Source. Based on our ultra fast fiber laser source. This system provides a turnkey, portable source of broadband laser pulses without requiring any user-adjustments to the fiber coupling.



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Applications

  • telecommunication

  • optical Coherence Tomography

  • optical Component Testing

  • flourescence Spectroscopy of Biological Markers


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Specification

  • Optical Spectrum covers 1000 - 1900 nm

  • Average Output Power > 80 mW

  • Repetition Rate 50 - 70 MHz

  • Head size: 180x210x70


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Ultrafast Applications:

Hatteras- pump probe

spectrometer

Beacon- fluorescence up-

conversion spectrometer

Jibe- white light continuum

generator

www.dmphotonics.com


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Visit our booth 6166 to discuss your applications and requirements


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