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Compact Eye Safe OPO Laser

Bao Zhao-ri

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Abstract

A new configuration with single resonator cavity for both pump laser and optical parametric oscillator(OPO) is proposed,which make an improvement on output beam quality and the OPO resonance mode matches with fundamental wave resonance mode.A compact anti-maladjusted OPO laser has been developed using a directional prism cavity and a Cr∶YAG crystal oriented its Brewster angle as a passive Q-switch.An output pulse energy of 8mJ,repetition rate of 1/6 Hz at 1.57μm with the beam divergence of 5.5mrad is obtained.

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What this paper is about

A new configuration with single resonator cavity for both pump laser and optical parametric oscillator(OPO) is proposed,which make an improvement on output beam quality and the OPO resonance mode matches with fundamental wave resonance mode.A compact anti-maladjusted OPO laser has been developed using a directional prism cavity and a Cr∶YAG crystal oriented its Brewster angle as a passive Q-switch.An output pulse energy of 8mJ,repetition rate of 1/6 Hz at 1.57μm with the beam divergence of 5.5mrad is obtained.

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Available abstract

A new configuration with single resonator cavity for both pump laser and optical parametric oscillator(OPO) is proposed,which make an improvement on output beam quality and the OPO resonance mode matches with fundamental wave resonance mode.A compact anti-maladjusted OPO laser has been developed using a directional prism cavity and a Cr∶YAG crystal oriented its Brewster angle as a passive Q-switch.An output pulse energy of 8mJ,repetition rate of 1/6 Hz at 1.57μm with the beam divergence of 5.5mrad is obtained.

Key concepts: Optics, Optical parametric oscillator, Laser, Resonator, Laser beam quality, Brewster's angle, Prism, Materials science

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