High UV average power at 15 kHz by frequency doubling of a copper HyBrID vapor laser in Β-barium borate

Nicolas Huot (1) , Christian Jonin (1) , Nicolas Sanner (1) , Emmanuel Baubeau (1) , Eric Audouard (1) , Pierre Laporte (1)

1 LHC - Laboratoire Hubert Curien [Saint Etienne]

Second harmonic generation of a copper HyBrID laser oscillator was performed at 15 kHz. 5.1WUV (255 nm) total average power at 15 kHz were generated in two b-barium borate (BBO) crystals by frequency doubling of two 511 nm beams from a single unpolarized HyBrID copper vapor laser. The beam quality factors of the UV emission are found to be M2 X ¼ 30 2 and M2 Y ¼ 24 2. These two UV beams, combined at the focal point of a focusing objective, may enable high repetition rate UV laser processing.

Keywords: Keywords: Copper HyBrID vapor laser; UV; Frequency doubling

Domains: Physics [physics]; Physics [physics]; Optics [physics.optics]

Nicolas Huot, Christian Jonin, Nicolas Sanner, Emmanuel Baubeau, Eric Audouard, et al.. High UV average power at 15 kHz by frequency doubling of a copper HyBrID vapor laser in Β-barium borate. Optics Communications, 2002, 211, pp.277-282. ⟨ujm-00118113⟩