LD侧面泵浦半导体可饱和吸收镜被动锁模激光器

王茜; 王勇刚; 段利娜; 李璐; 王屹山

doi:doi:10.3788/gzxb20154407.0714001

光子学报, 2015, 44 (7): 0714001, 网络出版: 2015-08-25

LD侧面泵浦半导体可饱和吸收镜被动锁模激光器

LD Side-pumped Passive Mode-locked Nd: YAG Laser with Semiconductor Saturable Absorption Mirror

论文大纲

王茜 ^*王勇刚段利娜李璐王屹山

作者单位

中科院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室, 西安 710119

摘要

利用半导体可饱和吸收镜锁模技术, 在半导体激光侧面抽运Nd∶YAG晶体固体激光器Z型腔结构中实现了连续锁模运转, 获得输出功率356 mW、重复频率101 MHz、单脉冲能量3.49 nJ、脉冲宽度23.4 ps和中心波长1 064 nm的皮秒锁模激光输出, 测得光束质量M2因子约1.2.为了提升锁模脉冲的平均单脉冲能量, 实验研究了声光调Q开关与半导体可饱和吸收镜同时作用的调Q锁模激光器, 在提高锁模脉冲稳定性的同时, 将锁模平均单脉冲能量提高到406 nJ, 为连续锁模脉冲的116倍.

Abstract

In order to obtain picoseconds pulse output, a Nd∶YAG laser passively mode-locked was proposed by a reflective semiconductor saturable-absorber mirror. Based on Z-type resonator, the laser output was obtained with repetition frequency of 101 MHz, pulses of 23.4 ps, central wavelength of 1 064 nm and average power of 356 mW, corresponding to 3.49 nJ pulse energy. The measured beam quality is about 1.2. In order to enhance the average single pulse energy of mode-locked pulse, Q-switched mode-locking operation was obtained by inserting an acousto-optic Q-switch, producing 364 mW pulses with 1.03 MHz repetition rate. The resulting 406 nJ pulse energy is 116 times larger than that from continuous mode-locking operation.

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王茜, 王勇刚, 段利娜, 李璐, 王屹山. LD侧面泵浦半导体可饱和吸收镜被动锁模激光器[J]. 光子学报, 2015, 44(7): 0714001. WANG Xi, WANG Yong-gang, DUAN Li-na, LI Lu, WANG Yi-shan. LD Side-pumped Passive Mode-locked Nd: YAG Laser with Semiconductor Saturable Absorption Mirror[J]. ACTA PHOTONICA SINICA, 2015, 44(7): 0714001.

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