High Power Picosecond Parametric Mid-IR Source Tunable Between 1.5 and 3.2 μm

Novák, Ondřej; Csanaková, Bianka; Rořkot, Lukář; Vyvlečka, Michal; Mužík, Jiří; Smrž, Martin; Endo, Akira; Jelı́nková, Helena; Mocek, Tomáš

doi:10.1364/assl.2018.ath2a.15

Cited by 1 publication

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“…Availability of optical elements such as polarizers is limited especially when they should operate over a broadband wavelength range. An example of a source, which needs ultra-broadband optical elements, is the picosecond, high-power mid-IR source based on optical parametric conversion under development at the HiLASE Centre [5,6,7]. It consists of an optical parametric generator (OPG) followed by an optical parametric amplifier (OPA), both pumped by a beam of an Yb:YAG thin-disk laser, delivering 90 W of average power at 93 kHz pulse repetition rate, 1030 nm wavelength and pulse duration down to 1.3 ps.…”

Section: Introductionmentioning

confidence: 99%

Silicon Brewster plate wavelength separator for a mid-IR optical parametric source

et al. 2021

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The availability of optical elements for the mid-infrared wavelength range, such as polarizers and wavelength separators, is limited especially when a broadband wavelength range coverage is required. We propose a polarizer based on uncoated silicon Brewster plates. A detailed analysis of the polarizer's contrast and the influence of parasitic reflections, its dependence on wavelength and the angular misalignment is shown. Two different arrangements of the two and four-plate polarizer are discussed. With contrast including the influence of parasitic reflections of over 10 3 for the whole transparency range of silicon (1.2 -6.5 μm), the four-plate polarizer is an effective, low-cost, high-power compatible tool providing sufficient contrast for signal and idler beam separation of the broadband mid-infrared type II optical parametric sources. The proposed polarizers can function as an attenuator assembly without any waveplate.

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Section: Introductionmentioning

confidence: 99%