Diode-pumped self-starting mode-locked femtosecond Yb:YCa_4O(BO_3)_3 laser  

作　　者：高子叶 朱江峰 田文龙 王军利 王庆 张治国 魏志义 于浩海 张怀金 王继扬 

机构地区：[1]School of Physics and Optoelectronic Engineering,Xidian University [2]Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences [3]State Key Laboratory of Crystal Material and Institute for Crystal Material,Shandong University

出　　处：《Chinese Physics B》2014年第5期307-310,共4页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.61205130);the National Key Scientific Instruments Development Program of China(Grant No.2012YQ120047);the Fundamental Research Funds for the Central Universities of Ministry of Education of China(Grant No.K5051305008)

摘　　要：A self-starting mode-locked femtosecond laser is accomplished with an oxoborate self-frequency doubling crystal Yb：YCa4O（BO3）3 （Yb：YCOB） as the gain medium and a semiconductor mirror as the saturable absorber. Pumped by a 976-nm fiber-coupled diode laser with 50-ktm core diameter, stable mode-locked laser pulses up to 430 mW were obtained at a repetition rate of 83.61 MHz under 5-W pump power. The autocorrelation measurement shows that the pulse duration is as short as 150 fs by assuming the sech2 pulse shape at a central wavelength of 1048 nm. This work has demonstrated a compact and reliable femtosecond laser source for prospective low-cost applications.A self-starting mode-locked femtosecond laser is accomplished with an oxoborate self-frequency doubling crystal Yb：YCa4O（BO3）3 （Yb：YCOB） as the gain medium and a semiconductor mirror as the saturable absorber. Pumped by a 976-nm fiber-coupled diode laser with 50-ktm core diameter, stable mode-locked laser pulses up to 430 mW were obtained at a repetition rate of 83.61 MHz under 5-W pump power. The autocorrelation measurement shows that the pulse duration is as short as 150 fs by assuming the sech2 pulse shape at a central wavelength of 1048 nm. This work has demonstrated a compact and reliable femtosecond laser source for prospective low-cost applications.

关 键 词：diode pump Yb：YCa4O（BO3）3 crystal femtosecond mode-locking 

分 类 号：TN248[电子电信—物理电子学]