Abstract

A facility for generating a supercontinuum in Al₂O₃ and CaF₂ crystals using a femtosecond laser, which is based on a chromium–forsterite (Cr : F) crystal, is described. The supercontinuum spectra under pumping at four wavelengths of 310, 413, 620, and 1240 nm were determined. A continuous spectrum of a supercontinuum from 324 to 1000 nm was obtained in the visible region, thus making it possible to study various samples using the pump–probe system. In the UV spectrum region, the shortest wavelength of a supercontinuum (225 nm) was obtained on the CaF₂ crystal when pumped with pulses at a wavelength of 310 nm.

中文翻译：

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超连续谱发生器，在透明冷凝介质中通过基于铬-镁橄榄石的飞秒激光脉冲泵浦

摘要

描述了一种使用飞秒激光（基于铬镁橄榄石（Cr：F）晶体）在Al ₂ O ₃和CaF ₂晶体中生成超连续谱的设备。确定了泵浦下310、413、620和1240 nm四个波长下的超连续谱。在可见光区域获得了从324到1000 nm的超连续谱的连续光谱，因此可以使用泵探针系统研究各种样品。在UV光谱区域中，当以310 nm波长的脉冲泵浦时，在CaF ₂晶体上获得了最连续谱的最短波长（225 nm）。