Mid-IR high-order multiphoton absorption and nonlinear refraction in GaP, ZnSe, GaSe, and ZGP crystals

Any new synthesized semiconductor nanoparticles or quantum dots (QDs) require to be examined under different conditions using laser pulses of variable energies, wavelengths and durations to understand the nonlinear optical mechanisms and distinguish their attractive properties for practical applications. Among various QDs the metal sulfides took special attention due to their advanced nonlinear optical properties. Additionally, laser ablation can readily produce plasmas containing QDs that could be used for different applications. One of them is that they can be used as emitters for harmonic generation from ultrashort laser pulses. Here we review recent studies of different low- and high-order optical nonlinearities of metal sulfide QDs, such as optical limiting, two-photon, saturable and reverse saturable types of nonlinear absorption, nonlinear refraction, and generation of high-order harmonics in extreme ultraviolet range.

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Multiphoton absorption and dispersive nonlinear refraction of ZnO in VIS-NIR bands

Optics & Laser Technology ◽

10.1016/j.optlastec.2021.107478 ◽

2022 ◽

Vol 145 ◽

pp. 107478

Author(s):

Shijia Hua ◽

Wending Zhang

Keyword(s):

Nonlinear Refraction ◽

Multiphoton Absorption

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Multiphoton absorption and nonlinear refraction of GaAs in the mid-infrared

Optics Letters ◽

10.1364/ol.32.000668 ◽

2007 ◽

Vol 32 (6) ◽

pp. 668 ◽

Cited By ~ 114

Author(s):

W. C. Hurlbut ◽

Yun-Shik Lee ◽

K. L. Vodopyanov ◽

P. S. Kuo ◽

M. M. Fejer

Keyword(s):

Nonlinear Refraction ◽

Multiphoton Absorption ◽

Mid Infrared

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The high-order optical nonlinearity of 2,11,20,29-tetrabromo-2,3-naphthalocyanine iron

Journal of Porphyrins and Phthalocyanines ◽

10.1142/s108842461850075x ◽

2018 ◽

Vol 22 (09n10) ◽

pp. 863-867

Author(s):

Wang Zhang ◽

Chunying He ◽

Lining Zhang ◽

Li Jiang ◽

Yijun Yuan ◽

...

Keyword(s):

Excited State ◽

Cross Sections ◽

Ground State ◽

Nonlinear Refraction ◽

Optical Nonlinearity ◽

High Order ◽

Saturable Absorption ◽

Reverse Saturable Absorption ◽

Triplet Excited State ◽

First Excited State

A novel naphthalocyanine 2,11,20,29-tetrabromo-2,3-naphthalocyanine iron was synthetized. Its optical nonlinearity was investigated using the Z-scan technique. Reverse saturable absorption and high-order optical nonlinear refraction were detected. The absorption cross sections of the ground state, the singlet first excited state and the triplet first excited state were fitted to be 3.2 × 10[Formula: see text] cm[Formula: see text], 6.2 × 10[Formula: see text] cm[Formula: see text] and 4.6 × 10[Formula: see text] cm[Formula: see text], respectively. Fits also gave 1.17 × 10[Formula: see text] cm[Formula: see text] for the refractive volume of the ground state, 0.6 for the ratio of the refractive volume of the singlet first excited state to the ground state and 2.7 for the ratio of refractive volume of the first triplet excited state to the ground state.

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