A gas laser oscillator achieving a substantial increase in laser output is provided. This gas laser oscillator includes a permeable screen plate at a position of a laser gas passage and can increase the laser output substantially by suppressing and uniformizing laser gas pulsation in a discharge tube.

 
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< Wavelength conversion device

< Semiconductor laser device and semiconductor-laser excited solid-state laser apparatus

> Optical wavelength shifting

> Sampled grating distributed feedback wavelength tunable semiconductor laser integrated with sampled grating distributed Bragg reflector
~ 00299