Two-photon absorption spectra of GaAs with2ℏω1near the direct band gap

1977 ◽  
Vol 16 (6) ◽  
pp. 2775-2780 ◽  
Author(s):  
J. P. van der Ziel
Keyword(s):  
Band Gap ◽  
Absorption Spectra ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Direct Band Gap ◽  
Two Photon ◽  
Direct Band

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

Ab initiocalculations of two-photon absorption spectra in semiconductors

1995 ◽  
Vol 52 (7) ◽  
pp. 4986-4997 ◽  
Author(s):  
Misao Murayama ◽  
Takashi Nakayama
Keyword(s):  
Absorption Spectra ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon

Two-photon absorption spectra of a near-infrared 2-azaazulene polymethine dye: solvation and ground-state symmetry breaking

2013 ◽  
Vol 15 (20) ◽  
pp. 7666 ◽  
Author(s):  
Honghua Hu ◽  
Olga V. Przhonska ◽  
Francesca Terenziani ◽  
Anna Painelli ◽  
Dmitry Fishman ◽  
...  
Keyword(s):  
Symmetry Breaking ◽  
Absorption Spectra ◽  
Ground State ◽  
Near Infrared ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Polymethine Dye

Simulation of two-photon absorption spectra of by direct calculation

2006 ◽  
Vol 118 (2) ◽  
pp. 205-219 ◽  
Author(s):  
G.W. Burdick ◽  
A. Burdick ◽  
V. Deev ◽  
Chang-Kui Duan ◽  
M.F. Reid
Keyword(s):  
Absorption Spectra ◽  
Direct Calculation ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon

scholarly journals Measurement of degenerate two-photon absorption spectra of a series of developed two-photon initiators using a dispersive white light continuum Z-scan

2017 ◽  
Vol 111 (7) ◽  
pp. 071901 ◽  
Author(s):  
Aliasghar Ajami ◽  
Wolfgang Husinsky ◽  
Maximilian Tromayer ◽  
Peter Gruber ◽  
Robert Liska ◽  
...  
Keyword(s):  
Absorption Spectra ◽  
White Light ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
White Light Continuum ◽  
Two Photon

LASER-INDUCED MULTIPHOTON PHOTOCONDUCTIVITY IN DIRECT AND INDIRECT BAND GAP CRYSTALS USING Z-SCAN TECHNIQUE

2009 ◽  
Vol 23 (23) ◽  
pp. 2783-2789 ◽  
Author(s):  
ARUN GAUR ◽  
D. K. SHARMA ◽  
K. S. SINGH ◽  
NAGESHWAR SINGH
Keyword(s):  
Absorption Coefficient ◽  
Band Gap ◽  
Laser Pulses ◽  
Beam Waist ◽  
Photon Absorption ◽  
Nanosecond Laser ◽  
Direct Band Gap ◽  
Direct Band ◽  
Nanosecond Laser Pulses ◽  
Indirect Band Gap

Nanosecond laser pulses have employed the photoconductive Z-scan technique. Photoconductivity traces measured by moving the sample across the laser beam waist were used for measuring two and three-photon absorption processes. The value of the three-photon absorption coefficient β3=9.6×10-10 cm 3/ GW 2 in the case of direct, and 8.96×10-12 cm 3/ GW 2 and 5.0×10-12 cm 3/ GW 2 in the case of indirect band gap crystals have been estimated from a comparison of traces measured by exciting the sample with the first and second harmonics of Nd : YAG laser. The low value of β3 in the case of indirect band gap crystals compared to direct band gap crystals is attributed to phonon-assisted transitions.

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