6.11 mJ Q-switched Tm: YAG laser end pumped by pulse laser diode at room temperature

Jin Guangyong; Song Xuedi; Wu Chunting; Chen Xinyu; Yu Kai

The 2 m laser is in the atmosphere window and the eye-safety wavelength regions. Therefore, it is expected to have potential application in wide range of fields. The lasers can be a light source of Coherent Doppler Wind Lidars and Differential Absorption Lidars. In order to develop a laser light source of Coherent Doppler Wind Lidars, a pulse LD end pumped Q-switched Tm:YAG laser was developed by using a plano-concave cavity with a acousto-optical (AO) Q-switch. The center wavelength of the output laser was measured to be 2 014.9 nm. In the repetition frequency of 100 Hz, a maximum single energy of 6.11 mJ after Q-switching operation and the narrowest pulse width of 324.7 ns were achieved at room temperature, whose slop efficiency was 13.56%. The Mx2 was 1.31 and the My2 was 1.35.

1. Jilin Key Laboratory of Solid-state Laser Techndogy,College of Sciences,Changchun University of Science and Technology,Changchun 130022,China

Received Date: 2014-02-05

Rev Recd Date: 2014-03-07

Publish Date: 2014-10-25

Key words:

2 μm /
Tm:YAG laser /
pulse pumped /
Q-switch

Abstract: The 2 m laser is in the atmosphere window and the eye-safety wavelength regions. Therefore, it is expected to have potential application in wide range of fields. The lasers can be a light source of Coherent Doppler Wind Lidars and Differential Absorption Lidars. In order to develop a laser light source of Coherent Doppler Wind Lidars, a pulse LD end pumped Q-switched Tm:YAG laser was developed by using a plano-concave cavity with a acousto-optical (AO) Q-switch. The center wavelength of the output laser was measured to be 2 014.9 nm. In the repetition frequency of 100 Hz, a maximum single energy of 6.11 mJ after Q-switching operation and the narrowest pulse width of 324.7 ns were achieved at room temperature, whose slop efficiency was 13.56%. The Mx2 was 1.31 and the My2 was 1.35.

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Reference (25)

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6.11 mJ Q-switched Tm: YAG laser end pumped by pulse laser diode at room temperature

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