The aim of this work is to answer the question: what is the best beam profile that maximizes the second harmonic generation efficiency in bulk nonlinear crystals? Using an expansion of arbitrary beams as a combination of Laguerre鈥揋auss modes, we accurately determine the most efficient beam and...
A new method of measuring second-harmonic generation efficiency using powder crystals is demonstrated. The second-harmonic wave generated with the evanescent wave (SHEW) is phase-matched for every material. The efficiency of the second-harmonic generation can be estimated from the SHEW power, ...
including frequency conversion, self-referencing of frequency combs, nonlinear spectroscopy and pulse characterization. Advanced functionalities are enabled by modulation of the harmonic generation efficiency, which can be achieved with electrical or all-optical triggers. Electrical control of the harmonic...
Very high conversion efficiency of the Cerenkov second harmonic generation in a nonlinear optical waveguide is demonstrated through numerical optimization of waveguide refractive indices, waveguide thickness, or domain-inversed period. Based on coupled-mode theory and a local-no-pump-depletion approximation...
Scalora, "Generation efficiency of the Second Harmonic Inhomogeneous Component," arXiv:1010.4693v1, (2010).V. Roppo, F. Raineri, R. Raj, I. Sagnes, J. Trull, R. Vilaseca, M. Scalora and C. Cojocaru, "Generation Efficiency of the Second Harmonic Inhomogeneous Component", Opt. Lett. ...
Silicon photonics lacks a second-order nonlinear optical (χ(2)) response in general, because the typical constituent materials are centrosymmetric and lack inversion symmetry, which prohibits χ(2) nonlinear processes such as second-harmonic generation (SHG). Here, we realize high SHG efficiency in...
Phase-matched optical second harmonic generation with a Nd:YAG laser and a GaAs laser was observed in an rf sputtering LiNbO 3 film guide deposited on a (111)MgO substrate. The efficiency of the SHG with a GaAs laser (TM 0 - TM 2) was about 10 -4 and the conversion efficiency with ...
Second harmonic generator Model: ASG lHigh conversion efficiency lSmall walk-off angle lLow beam divergence lNo heating Second harmonic generators ASG800, ASG800-B and ASG1250 are developed for producing the coherent radiation at doubling frequency for femtosecond oscillator sources having output wavele...
Second order polarization, χ(2) E2, has been suggested to be useful for a variety of purposes, including parametric effects, most notably frequency doubling, also referred to as second harmonic generation (SHG). Frequency doubling has attracted particular attention, since laser diodes are not read...
5) secondary harmonic exciting efficiency 二次谐波激发效率6) third harmonics generation 三次谐波转换 1. The type Ⅰ/Ⅱ angle-detuning scheme for third harmonics generation has been taken as an example,and then the influence of low-frequency phase perturbation on the focal characterization of ...