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Stimulated Raman Scattering (SRS) in α-AlOOH (Diaspore)
Crystal Research and Technology ( IF 1.5 ) Pub Date : 2021-09-16 , DOI: 10.1002/crat.202100055
Ladislav Bohatý 1 , Oliver Lux 2, 3 , Hans‐Joachim Eichler 2 , Hanjo Rhee 2 , Alexander A. Kaminskii 4 , Petra Becker 1
Affiliation  

In single crystals of orthorhombic α-AlOOH, known also as mineral diaspore, χ(3)-nonlinear lasing by stimulated Raman scattering (SRS) and Raman-induced four-wave mixing (RFWM) is investigated. Picosecond pumping at 1.064 µm wavelength produces a broadband Stokes and anti-Stokes frequency comb with up to 25 SRS- and RFWM-generated emission lines. All observed Stokes and anti-Stokes lasing components in the visible and near-IR are identified and attributed to a single SRS-promoting vibration mode with ωSRS ≈ 445 cm−1. The first Stokes steady-state Raman gain coefficient in the visible spectral range is estimated to a value not less than 0.36 cm GW−1.

中文翻译:

α-AlOOH(水铝石)中的受激拉曼散射 (SRS)

在正交晶系 α-AlOOH(也称为矿物水铝石)的单晶中,研究了通过受激拉曼散射 (SRS) 和拉曼诱导四波混合 (RFWM) 产生的χ (3) -非线性激光。1.064 µm 波长的皮秒泵浦产生宽带斯托克斯和反斯托克斯频率梳,具有多达 25 条 SRS 和 RFWM 生成的发射线。所有在可见光和近红外中观察到的斯托克斯和反斯托克斯激光分量都被识别并归因于单一的 SRS 促进振动模式,ω SRS ≈ 445 cm -1。可见光谱范围内的第一斯托克斯稳态拉曼增益系数估计为不小于0.36cm GW -1 的值
更新日期:2021-11-16
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