Frequency conversion of a 100-fs Ti:sapphire laser pulse into the mid-IR range in a single HgGa₂S₄ nonlinear crystal with a quantum efficiency of 30.

IF 3.1 2区物理与天体物理 Q2 OPTICS

Optics letters Pub Date : 2025-04-01 DOI:10.1364/OL.555407

Igor Kinyaevskiy, Andrew Koribut, Yakov Grudtsyn, Maxim Ionin

引用次数: 0

Abstract

Difference frequency generation setup for frequency conversion of a femtosecond Ti:sapphire laser pulse into the long-wavelength mid-infrared (IR) range with a single HgGa₂S₄ nonlinear crystal was launched and demonstrated to be the best, to our knowledge, combination of simplicity and efficiency. In this setup, the signal wave was formed by spectrum broadening of the aforementioned laser pulse under its filamentation in a CO₂ gas cell. The spectrum tuning of a mid-IR laser pulse within a wavelength interval of 6-10.5 μm was demonstrated. The maximum energy of 0.24 ps laser pulse at 8 μm wavelength reached up to 35 μJ at an internal quantum conversion efficiency of 30%.

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在单个HgGa2S4非线性晶体中，100-fs Ti：蓝宝石激光脉冲在中红外范围内的频率转换，量子效率为30。

利用单个HgGa2S4非线性晶体将飞秒Ti：蓝宝石激光脉冲转换为长波长中红外（IR）范围的差频产生装置被推出，并被证明是我们所知的最好的，简单和高效的结合。在这个装置中，信号波是由上述激光脉冲在CO2气体池中灯丝下的频谱展宽形成的。研究了中红外激光脉冲在6 ~ 10.5 μm波长范围内的光谱调谐特性。波长为8 μm的0.24 ps激光脉冲最大能量可达35 μJ，内量子转换效率为30%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optics letters 物理-光学

CiteScore

6.60

自引率

8.30%

发文量

2275

审稿时长

1.7 months

期刊介绍： The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community. Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.

Frequency conversion of a 100-fs Ti:sapphire laser pulse into the mid-IR range in a single HgGa2S4 nonlinear crystal with a quantum efficiency of 30.

Abstract

Frequency conversion of a 100-fs Ti:sapphire laser pulse into the mid-IR range in a single HgGa₂S₄ nonlinear crystal with a quantum efficiency of 30.