The Conversion Efficiency of Femtosecond Ytterbium Fiber Laser Pulses to the Mid-IR Range in AgGaS2, BaGa4Se7, and HgGa2S4 Crystals

被引：1

作者：

Kinyaevsky, I. O. ^{[1
]}

Smirnov, N. A. ^{[1
]}

Koribut, A. V. ^{[1
]}

Ionin, M. V. ^{[1
]}

Kudryashov, S. I. ^{[1
]}

Badikov, D. V. ^{[2
]}

Safaraliev, G. K. ^{[3
]}

机构：

[1] Russian Acad Sci, Lebedev Phys Inst, Moscow, Russia

[2] Kuban State Univ, Krasnodar, Russia

[3] PeoplesFriendship Univ Russia, Moscow, Russia

来源：

BULLETIN OF THE LEBEDEV PHYSICS INSTITUTE | 2024年 / 51卷 / SUPPL11期

关键词：

femtosecond pulse; difference frequency generation; mid-IR range; nonlinear crystal;

D O I：

10.3103/S1068335624601262

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The efficiency of AgGaS2, BaGa4Se7, and HgGa2S4 crystals has been investigated in a mid-IR frequency difference generator based on a femtosecond ytterbium fiber laser with a wavelength of 1.03 mu m, pulse duration of 0.25 ps, pulse repetition rate of 10 kHz, and average radiation power of 5 W. It is shown that under the given experimental conditions the highest efficiency of difference-frequency generation (up to similar to 7.5%) is achieved with a HgGa2S4 crystal that provides 2 or 3 times higher energy of pulses with a wavelength of 4 to 7 mu m (up to 6 mu J) without damaging it. In addition, this crystal yielded the longest wavelength of converted radiation-11 mu m with pulse energy similar to 1 mu J.

引用

页码：S928 / S931

页数：4

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