High-power terahertz optical pulse generation with a dual-wavelength harmonically mode-locked Yb:YAG laser

被引：10
|
作者：
Zhuang, W. Z. [1 ]
Chang, M. T. [1 ]
Su, K. W. [1 ]
Huang, K. F. [1 ]
Chen, Y. F. [1 ]
机构：
[1] Natl Chiao Tung Univ, Dept Electrophys, Hsinchu 30010, Taiwan
来源：
LASER PHYSICS | 2013年 / 23卷 / 07期
关键词：
TI-SAPPHIRE LASER; MICROCHIP LASER; YTTERBIUM CONCENTRATION; AMBIENT-TEMPERATURE; FEMTOSECOND PULSES; PICOSECOND PULSES; PERFORMANCE; OPERATION; EFFICIENT; DIAMOND;
D O I：
10.1088/1054-660X/23/7/075803
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report on high-power terahertz optical pulse generation with a dual-wavelength harmonically mode-locked Yb:YAG laser. A semiconductor saturable absorber mirror is developed to achieve synchronously mode-locked operation at two spectral bands centered at 1031.67 and 1049.42 nm with a pulse duration of 1.54 ps and a pulse repetition rate of 80.3 GHz. With a diamond heat spreader to improve the heat removal efficiency, the average output power can be up to 1.1 W at an absorbed pump power of 5.18 W. The autocorrelation traces reveal that the mode-locked pulse is modulated with a beat frequency of 4.92 THz and displays a modulation depth to be greater than 80%.
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页数：5
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