Polarization and field dependent two‐photon absorption in GaAs/AlGaAs multiquantum well waveguides in the half‐band gap spectral region

1991 ◽  
Vol 59 (26) ◽  
pp. 3440-3442 ◽  
Author(s):  
H. K. Tsang ◽  
R. V. Penty ◽  
I. H. White ◽  
R. S. Grant ◽  
W. Sibbett ◽  
...  
Keyword(s):  
Band Gap ◽  
Spectral Region ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Field Dependent ◽  
Multiquantum Well

scholarly journals Enhanced two-photon absorption in a hollow-core photonic-band-gap fiber

2011 ◽  
Vol 83 (3) ◽  
Author(s):  
Kasturi Saha ◽  
Vivek Venkataraman ◽  
Pablo Londero ◽  
Alexander L. Gaeta
Keyword(s):  
Band Gap ◽  
Photonic Band Gap ◽  
Photon Absorption ◽  
Hollow Core ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Photonic Band

Two-photon excitation spectroscopy of photosynthetic light-harvesting complexes and pigments

2019 ◽  
Vol 216 ◽  
pp. 494-506 ◽  
Author(s):  
Alexander Betke ◽  
Heiko Lokstein
Keyword(s):  
Spectral Region ◽  
Protein Complexes ◽  
Photosynthetic Pigment ◽  
Photon Absorption ◽  
Light Harvesting Complexes ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Photon Excitation ◽  
Pigment Protein Complexes ◽  
Two Photon Excitation

Two-photon excitation (TPE) profiles of LHCII samples containing different xanthophyll complements were measured in the presumed 11Ag− → 21Ag− (S0 → S1) transition region of xanthophylls. Additionally, TPE profiles of Chls a and b in solution and of WSCP, which does not contain carotenoids, were measured. The results indicate that direct two-photon absorption by Chls in the presumed S0 → S1 transition spectral region of carotenoids is dominant over that of carotenoids, with negligible contributions of the latter. These results suggest the re-evaluation of previously published TPE data obtained with photosynthetic pigment–protein complexes containing (B)Chls and carotenoids.

Two-photon absorption and multiphoton-induced photoluminescence of bulk GaN excited below the middle of the band gap

2003 ◽  
Vol 82 (26) ◽  
pp. 4714-4716 ◽  
Author(s):  
Y. Toda ◽  
T. Matsubara ◽  
R. Morita ◽  
M. Yamashita ◽  
K. Hoshino ◽  
...  
Keyword(s):  
Band Gap ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Bulk Gan

Simulation of 3D Layer-By-Layer Photonic Crystals

2007 ◽  
Vol 121-123 ◽  
pp. 1165-1170
Author(s):  
S.S. Fan ◽  
R. Guo ◽  
Z.Y. Li ◽  
W.H. Huang
Keyword(s):  
Photonic Crystals ◽  
Band Gap ◽  
Photonic Band Gap ◽  
Photon Absorption ◽  
Layer By Layer ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Laser Microfabrication ◽  
Microfabrication Technique ◽  
Photonic Band

3D layer-by-layer photonic crystals possess a full photonic band gap. Simulation of 3D layer-by-layer photonic crystals can optimize the parameters of the photonic crystals to get useful photonic band gap by solving Maxwell’s equations using the plane-wave-based transfer-matrix method. The relations between the parameters (rod pitch a, rod width w, rod thickness h and rod refractive index n) and the photonic band gap have been simulated. We also have fabricated a 3D layer-by-layer photonic crystal with femtosecond laser microfabrication technique through two-photon-absorption photopolymerization of resin. Its reflection spectra have been detected which agree with the simulation result.

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