Laser diode pumped Cr4+:Nd3+:YAG monolithic microchip self Q-switched laser

Jun Chen; Xiaodong Wu; Tao Zhou

doi:10.1117/12.482202

5 September 2002 Laser diode pumped Cr⁴⁺:Nd3+:YAG monolithic microchip self Q-switched laser

Jun Chen, Xiaodong Wu, Tao Zhou

Proceedings Volume 4913, Semiconductor Lasers and Applications; (2002) https://doi.org/10.1117/12.482202
Event: Photonics Asia, 2002, Shanghai, China

Abstract

Using a Cr4+:Nd3+:YAG monolithic microchip pumped by a Laser Diode (LD), the self Q-switched laser pulses are obtained. The resonator is made up directly from both parallel surface of the Cr4+:Nd3+:YAG microchip. There are two kinds of way to pump the microchip by LD. In the first case, the Cr4+:Nd3+:YAG monolithic microchip pumped by LD with CW operation. The output self Q-switched laser pulses with the repetition rate of 2.78kHz and pulse width of 6ns are obtained. In the second case, the Cr4+:Nd3+ :YAG microchip is pumped by LD in the pulsed operation with pre-pumping. The Q-switched output laser with a controllable repetition rate and pulse width of 8ns is achieved. In this case, the LD is driven with a weak modulated current over the direct base current which is near the threshold. The base cunent is modulated by prearranged repetition rate of 1~100Hz. With such a pulse operation, the output laser pulse with the same repetition rate can be obtained. This monolithic microchip laser possess higher transform efficiency, narrow pulse width and controllable repetition rate.

Citation Download Citation

Jun Chen, Xiaodong Wu, and Tao Zhou "Laser diode pumped Cr⁴⁺:Nd3+:YAG monolithic microchip self Q-switched laser", Proc. SPIE 4913, Semiconductor Lasers and Applications, (5 September 2002); https://doi.org/10.1117/12.482202

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KEYWORDS

Pulsed laser operation

Q switched lasers

Crystals

Laser crystals

Semiconductor lasers

YAG lasers

Optical pumping

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