70 femtosecond Kerr-lens mode-locked multipass-cavity Alexandrite laser

被引：21

作者：

Cihan, Can ^{[1
,2
]}

Muti, Abdullah ^{[1
,2
]}

Baylam, Isinsu ^{[3
]}

Kocabas, Askin ^{[4
]}

Demirbas, Umit ^{[5
]}

Sennaroglu, Alphan ^{[1
,2
,3
]}

机构：

[1] Koc Univ, Dept Phys, Laser Res Lab, TR-34450 Istanbul, Turkey

[2] Koc Univ, Dept Elect Elect Engn, Laser Res Lab, TR-34450 Istanbul, Turkey

[3] Koc Univ, Surface Sci & Technol Ctr KUYTAM, TR-34450 Istanbul, Turkey

[4] Koc Univ, Dept Phys, TR-34450 Istanbul, Turkey

[5] Antalya Bilim Univ, Dept Elect & Elect Engn, Laser Technol Lab, TR-07190 Antalya, Turkey

来源：

OPTICS LETTERS | 2018年 / 43卷 / 06期

关键词：

MULTIPHOTON MICROSCOPY; EFFICIENT;

D O I：

10.1364/OL.43.001315

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report, to the best of our knowledge, the shortest femto-second pulses generated from a Kerr-lens mode-locked (KLM) Alexandrite laser operating near 750 nm. The Alexandrite gain medium was pumped with a continuous-wave (cw), 532 nm laser, and the performance of both the short and extended resonators was investigated. The use of an extended cavity eliminated the multi-wavelength spectral instabilities observed during the cw operation of the short cavity. Furthermore, since the repetition rate of the Alexandrite laser was reduced from 107 to 5.6 MHz, the resulting increase in the intracavity pulse energy provided enhanced Kerr nonlinearity and eliminated the Q-switching instabilities during mode- locked operation. The KLMMPC Alexandrite laser produced nearly transform-limited, 70 fs pulses at a pulse repetition rate of 5.6MHz with only 1 W of pump power. The time-bandwidth product was further measured to be 0.331. (C) 2018 Optical Society of America

引用

页码：1315 / 1318

页数：4

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