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2010•Journal of Optoelectronics·laserRequires access

High efficiency,compact UV 355 nm laser

Fan Zhang

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Abstract

A LD end-pumped Nd:YAG,all-solid-state ultraviolet laser is demonstrated under acousto-optic Q-switch operation,by using a simple and compact flat-flat cavity resonator,with type Ⅰ phase-match LiB3O5(LBO) as secong harmonic generation crystal and type Ⅱ phase-matched LBO as third harmonic generation crystal.With an input pump power of 28 W,average power of 8.1 W at 1 064 nm was generated with the repetition rate 10 kHz.Using the extra-cavity frequency conversion of critical phase match LBO crystal,2.4 W second harmonic radiation at 532 nm was obtained,after frequency tripling 1.65 W of 355 nm laser with single pulse energy 165 μJ and pulse width 6 ns was obtained,the peak power of 355 nm laser was up to 27.5 kW.

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What this paper is about

A LD end-pumped Nd:YAG,all-solid-state ultraviolet laser is demonstrated under acousto-optic Q-switch operation,by using a simple and compact flat-flat cavity resonator,with type Ⅰ phase-match LiB3O5(LBO) as secong harmonic generation crystal and type Ⅱ phase-matched LBO as third harmonic generation crystal.With an input pump power of 28 W,average power of 8.1 W at 1 064 nm was generated with the repetition rate 10 kHz.Using the extra-cavity frequency conversion of critical phase match LBO crystal,2.4 W second harmonic radiation at 532 nm was obtained,after frequency tripling 1.65 W of 355 nm laser with single pulse energy 165 μJ and pulse width 6 ns was obtained,the peak power of 355 nm laser was up to 27.5 kW.

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Available abstract

A LD end-pumped Nd:YAG,all-solid-state ultraviolet laser is demonstrated under acousto-optic Q-switch operation,by using a simple and compact flat-flat cavity resonator,with type Ⅰ phase-match LiB3O5(LBO) as secong harmonic generation crystal and type Ⅱ phase-matched LBO as third harmonic generation crystal.With an input pump power of 28 W,average power of 8.1 W at 1 064 nm was generated with the repetition rate 10 kHz.Using the extra-cavity frequency conversion of critical phase match LBO crystal,2.4 W second harmonic radiation at 532 nm was obtained,after frequency tripling 1.65 W of 355 nm laser with single pulse energy 165 μJ and pulse width 6 ns was obtained,the peak power of 355 nm laser was up to 27.5 kW.

Key concepts: Laser, Materials science, Optics, Crystal (programming language), Energy conversion efficiency, Optoelectronics, Resonator, Phase (matter)

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