Journal ArticleDOI
Multiphoton transitions at the direct and indirect band gaps of gallium phosphide
TLDR
In this paper, the non linear photoconductivity of GaP was studied using three-photon and twophoton excitation by a neodymium and a ruby laser.About:
This article is published in Solid State Communications.The article was published on 1975-02-15. It has received 22 citations till now. The article focuses on the topics: Gallium phosphide & Direct and indirect band gaps.read more
Citations
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Review of multiphoton absorption in crystalline solids
TL;DR: In this article, an extensive review of theoretical and experimental investigations conducted over the last two decades since the advent of the laser and relating to the simultaneous absorption of one or more photons by the valence electrons of a crystalline solid is given.
Journal ArticleDOI
Multiphonon absorption coefficients in solids: a universal curve
H S Brandi,C B de Araujos +1 more
TL;DR: In this article, a universal curve for the frequency dependence of the multiphoton absorption coefficient is proposed based on a non-perturbative approach, which yields results for the higher-order absorption coefficients in good agreement with the experimental data.
Journal ArticleDOI
Anti-Stokes bright yellowish emission of NdAlO3 nanocrystals
TL;DR: In this paper, an infrared laser diode-induced anti-Stokes bright yellowish emission of NdAlO3 nanocrystalline powder was observed at room temperature in ambient atmosphere.
Journal ArticleDOI
Large two-photon absorptivity of hemoglobin in the infrared range of 780-880 nm.
TL;DR: Hemoglobin was found to have a peak two-photon absorptivity of sigmaTPA approximately 150 GM at lambda0=825 nm, near a resonance of the Soret band, which supports theoretical expectations and shows that the ligand affects the electronic states involved in TPA.
Journal ArticleDOI
Carrier concentration dependence of optical Kerr nonlinearity in indium tin oxide films
TL;DR: In this paper, the optical Kerr nonlinearity in indium tin oxide (ITO) films was measured using Z-scans with 200-fs laser pulses at wavelengths ranging from 720 to 780 nm.
References
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Journal ArticleDOI
Analysis of indirect two-photon interband transitions and of direct three-photon transitions in semiconductors
F. Bassani,A. E. Hassan +1 more
TL;DR: In this article, the indirect two-photon interband transition rate has been studied by analysing the absorption coefficient for the photon Ħϖ1 in the presence of a second photon ϖ2 as a function of frequency near the band edge at different temperatures.
Journal ArticleDOI
Multiphoton Transitions in Ionic Crystals
TL;DR: In this paper, photoconductivity measurements in uncolored single crystals of NaCl, KCl, and KI are reported, showing clear evidence of multiphoton absorption processes.
Journal ArticleDOI
Two-photon interband transitions at critical points in semiconductors
TL;DR: In this article, the two-photon transition probability between electronic energy bands in crystals is obtained in correspondence to all types of critical points, including saddle points and sharp edges, and the results indicate sharp peaks in correspondence with saddle pointsM1, besides the sharp edge atM0 already found by Braunstein.
Journal ArticleDOI
Transmittance, luminescence, and photocurrent in CdS under two-photon excitation
TL;DR: In this paper, the nonlinear transmittance, photocurrent, and luminescence of a $Q$-switched ruby laser were measured and compared with the predictions of existing theories.
Journal ArticleDOI
The two-photon transition in indirect-band-gap semiconductors
TL;DR: In this article, the absorption coefficient of the two-photon excitation process in which phonons of the crystals participate during the transition process is calculated for ionic and covalent indirect-band-gap semiconductors.
Related Papers (5)
Analysis of indirect two-photon interband transitions and of direct three-photon transitions in semiconductors
F. Bassani,A. E. Hassan +1 more