Results 1 to 10 of about 65,086 (261)

Nonlinear Resonance Absorption in the Laser-Cluster Interaction [PDF]

Physical Review Letters, 2006
Rare gas or metal clusters are known to absorb laser energy very efficiently. Upon cluster expansion the Mie plasma frequency may become equal to the laser frequency. This linear resonance has been well studied both experimentally and theoretically employing pump probe schemes.
Kundu, M., Bauer, D.
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Nonlinear excitonic optical absorption in GaSb

Applied Physics Letters, 1987
We have measured the saturation of optical absorption in GaSb at wavelengths close to the band gap, and have determined the nonlinear absorption (α2) and refraction (n2) coefficients. At liquid-helium temperature a sharp free-exciton absorption line is observed which saturates with increasing incident laser intensity; we obtain values ‖α2‖=70 cm W−1 ...
Fox, A, Maciel, A, Ryan, J, Kerr, T
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Research on Nonlinear Absorption Effect in KDP and 70%-DKDP Crystals

Crystals, 2017
Nonlinear optical absorption effect in KDP and 70%-DKDP crystals, which were grown by the conventional temperature cooling method, was systematically studied using picosecond pulse laser excitation. Using open aperture Z-scan measurements, the dependence
Duanliang Wang, Shenglai Wang, Jiyang Wang, Chuanying Shen, Weidong Li, Pingping Huang, Hui Liu, Robert I. Boughton   +7 more
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Probing material absorption and optical nonlinearity of integrated photonic materials

Nature Communications, 2022
Optical absorption and nonlinear index are important performance drivers in devices like microcombs. Here the authors use resonance-enhanced nonlinear spectroscopy to characterize absorption limits and nonlinear index for some integrated photonic ...
Maodong Gao, Qi-Fan Yang, Qing-Xin Ji, Heming Wang, Lue Wu, Boqiang Shen, Junqiu Liu, Guanhao Huang, Lin Chang, Weiqiang Xie, Su-Peng Yu, Scott B. Papp, John E. Bowers, Tobias J. Kippenberg, Kerry J. Vahala   +14 more
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Linear and Nonlinear Optical Properties of Anthocyanin Dye from Red Cabbage in Different pH Solutions

مجلة بغداد للعلوم, 2023
This article studied some linear and nonlinear optical characteristics of different pH solutions from anthocyanin dye extract at 180 oC from red cabbage. First, the linear spectral characteristics, including absorption and transmittance in the range 400-
Rajaa Nader, Slafa I. Ibrahim Ibrahim , Ali H. Al-Hamdani   +2 more
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Optical Properties of the Fresnoite Ba2TiSi2O8 Single Crystal

Crystals, 2017
In this work, using large-sized single crystals of high optical quality, the optical properties of Ba2TiSi2O8 were systematically investigated, including transmission spectra, refractive indices and nonlinear absorption properties. The crystal exhibits a
Chuanying Shen, Huaijin Zhang, Duanliang Wang, Jiyang Wang, Robert I. Boughton   +4 more
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Indium selenide film: a promising saturable absorber in 3- to 4-μm band for mid-infrared pulsed laser

Nanophotonics, 2020
Indium selenide (InSe) film, an emerging two-dimensional chalcogenide semiconductor, has recently attracted growing interests in optoelectronics. However, its nonlinear characteristics and application potentials in mid-infrared (IR) region remain open ...
Hai Ting, Xie Guoqiang, Qiao Zhen, Qin Zhipeng, Ma Jie, Sun Yue, Wang Fengqiu, Yuan Peng, Ma Jingui, Qian Liejia   +9 more
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Focusing and absorption of nonlinear oscillations [PDF]

Journées équations aux dérivées partielles, 1993
The Cauchy problem for the dissipative wave equation \[ u_{tt} - \Delta u + u | u |^ p = 0, \quad t > 0, \quad x \in \mathbb{R}^ d \] with fast oscillating initial functions is considered. The problem is a passage of the fast oscillating wave through a focal point, where the wave amplitude is increasing that is predicted by the geometric optics method.
Joly, J. L., Métivier, G., Rauch, J.
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On the behavior of solutions of a doubly nonlinear degenerate parabolic system with nonlinear sources and absorptions with variable densities

Қарағанды университетінің хабаршысы. Математика сериясы
In this paper, the problem of a doubly nonlinear degenerate parabolic system with nonlinear sources and absorption terms not located in a homogeneous medium was considered. It obeys zero Dirichlet boundary conditions in a smooth bounded domain.
M.M. Aripov, O.X. Atabaev, A.M. AL-Marashi   +2 more
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Nonlinear Responses and Optical Limiting Behavior of Ag Nanoparticle Suspension [PDF]

Journal of Sciences, Islamic Republic of Iran, 2010
In this study, the nonlinear optical properties and optical limiting performance of the silver nanoparticles (AgNPs) in distilled water are investigated. The nonlinear absorption coefficient of the colloid is measured by the Z-scan technique. The optical
N Mansour
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