Abstract

Diode-pumped optical parametric oscillation has been demonstrated for the first time to our knowledge in a single Nd:MgO:LiNbO₃ nonlinear crystal. The crystal is pumped by a semiconductor diode laser array at 812 nm. The Nd³⁺ ions absorb the 812-nm radiation to generate 1084-nm laser oscillation. On internal Q switching the 1084-nm radiation pumps the LiNbO₃ host crystal that is angle cut at 46.5° and generates optical parametric oscillation. The oscillation threshold that is due to the 1084-nm laser pump with a pulse length of 80 ns in a 1-mm-diameter beam was measured to be ≈1 mJ and produced 0.5-mJ output at 3400-nm signal wavelength.

© 1996 Optical Society of America

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