Fluoride semiconductor saturable-absorber mirror for ultrashort pulse generation

被引:8
|
作者
Schön, S [1 ]
Haiml, M [1 ]
Gallmann, L [1 ]
Keller, U [1 ]
机构
[1] Swiss Fed Inst Technol, Hoenggerberg HPT, Swiss Fed Inst Technol, ETH,Inst Quantum Elect,Dept Phys, CH-8093 Zurich, Switzerland
关键词
D O I
10.1364/OL.27.001845
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We demonstrate what is to our knowledge the first ultrabroadband monolithically grown AlGaAs/CaF2 semiconductor saturable-absorber mirror (SESAM) that covers nearly the entire gain spectrum of a Ti:sapphire laser. A large high-reflectivity bandwidth of more than 300 nm is provided by a device consisting of only six material layers. This fluoride SESAM had a modulation depth of 2.2%, a fast recovery time constant of less than 150 fs, and a slow recovery time constant of 1.2 ps. Using this SESAM inside a Ti:sapphire laser produced self-starting sub-10-femtosecond pulses. (C) 2002 Optical Society of America.
引用
收藏
页码:1845 / 1847
页数:3
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