Woodpile photonic crytals fabricated by two photon polymerisation
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Woodpile Photonic Crytals fabricated by Two-Photon Polymerisation. Gaël Nardin Cours Photonic Crystals 2009. Woodpile Photonic Crystals. Woodpile Photonic Crystals. Outline. Two-photon Polymerisation technique (2PP) Fabrication of woodpile photonic crystals Superprism effect Inversion

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Woodpile photonic crytals fabricated by two photon polymerisation

Woodpile Photonic Crytalsfabricated byTwo-Photon Polymerisation

Gaël Nardin

Cours Photonic Crystals 2009




Outline
Outline

  • Two-photon Polymerisation technique (2PP)

  • Fabrication of woodpile photonic crystals

  • Superprism effect

  • Inversion

  • Infiltration of Quantum Dots


Two photon polymerisation 2pp
Two-Photon Polymerisation (2PP)

Not diffraction limited

Practical resolution obtained :

~100nm on x-y plane

300nm along z direction

J. Serbin et al, Optics Express 28, (2003)


Two photon polymerisation 2pp1
Two-Photon Polymerisation (2PP)

  • Resins:

  • SU-8

  • Ormocer

  • n=~ 1.5

J. Serbin et al, Optics Express 28, (2003)


C. Reinhardt et al, Optics Lett. 31, (2006)

www.lzh.de



Optical characterization
Optical characterization

disorder and imperfections within the fabricated crystal

→ Rayleigh scattering scaling as λ −4

J. Serbin et al., Optics Express 21 (2004)



Superprism effect
Superprism effect

J. Serbin et al., J. Appl. Phys 98 (2005)

J. Serbin et al., Adv. Mat. 18 (2006)


Superprism effect1
Superprism effect

J. Serbin et al., Optics Express 14 (2006)


Inversion
Inversion

Infiltration with TiO2

J. Serbin et al., Optics Express 21 (2004)


Inversion1
Inversion

Infiltration with TiO2

Infiltration with

TiO2 mixed with SiO2

TiO2

SU-8

TiO2 & SiO2

J. Serbin et al., Optics Express 21 (2004)

B. Jia et al., J. Appl. Phys 102 (2007)


Inversion2
Inversion

Infiltration with TiO2

Infiltration with

TiO2 mixed with SiO2

TiO2

SU-8

“almost completely reproducible”

TiO2 & SiO2

J. Serbin et al., Optics Express 21 (2004)

B. Jia et al., J. Appl. Phys 102 (2007)


Inversion3
Inversion

n = 2.2

Infiltration with

TiO2 mixed with SiO2

TiO2

SU-8

Measurement:

Average on 18° to 41° with respect to the surface normal of the PC

TiO2 & SiO2

B. Jia et al., J. Appl. Phys 102 (2007)


Infiltration of quantum dots
Infiltration of Quantum Dots

PbSe QDs

J. Li et al., Adv. Mat. 19 (2007)


Infiltration of quantum dots1
Infiltration of Quantum Dots

Transmission

of PC

Bare QD

emission

J. Li et al., Adv. Mat. 19 (2007)


Infiltration of quantum dots2
Infiltration of Quantum Dots

QDs alone

QDs in PC

“This work provides an important step towards controlling QD emission in the NIR wavelength range with 3D PCs, which could facilitate the exploration of advanced functionalities of the 3D PCs for active devices in telecommunications.”

J. Li et al., Adv. Mat. 19 (2007)


Conclusions
Conclusions

  • Technique puissante et rapide pour la réalisation de structures arbitraires 3D diélectriques

  • Jolies images SEM

  • Performances optiques limitées par le désordre

  • Integration avec d’autres technologies difficile


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