Effect of pulse to pulse variation of divergence, pointing and amplitude of copper vapor laser radiations on their second harmonic and sum frequency conversion

This paper presents, for the first time, comprehensive studies on high power second harmonic deep ultraviolet (UV: λ ≈ 255.3 nm) generation from a low temperature, high repetition rate (18 kHz) variant of copper laser (Cu-HBr laser) with different optical resonators (plane–plane resonator and unstable resonators of magnifications 12.5, 50 & 100), pump-beam focussing condition and pump powers. With a type-I, critically phase matched β-barium borate (BBO) crystal as the harmonic generator and different pump average powers (⩽10 W) of the laser, the variation in UV average output powers and its conversion efficiencies were studied. The average UV power and conversion efficiency as high as about 2 W and 26% respectively were achieved. The experimental results were analysed in light of the beam quality attributes of the pump beams vis-à-vis limiting thermal and walk-off effects associated.

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Studies on Spatial, Spectral, and Energy Characteristics of Copper-HBr Laser Radiations

Biswal

Agrawal

Prakash

et al. 2014

IEEE J. Quantum Electron.

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Effect of pulse to pulse variation of divergence, pointing and amplitude of copper vapor laser radiations on their second harmonic and sum frequency conversion

Cited by 4 publications

References 15 publications

Theoretical investigation of second harmonic efficiency effect on third harmonic conversion efficiency in BBO crystals

Theoretical investigation of second harmonic efficiency effect on third harmonic conversion efficiency in BBO crystals

Studies on high power second-harmonic deep-UV generation from a high repetition-rate Cu-HBr laser

Studies on Spatial, Spectral, and Energy Characteristics of Copper-HBr Laser Radiations

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