Abstract

We report on a new method for fast amplitude modulation of blue 429-nm radiation that is produced by frequency doubling of a GaAlAs diode laser in a monolithic KNbO₃ resonator. The diode-laser frequency was locked to the resonator by use of the Pound–Drever technique and FM sidebands that were generated by superimposition of an rf current on the diode-laser injection current. We modulated the blue power output by controlling the amplitude of this rf current, which controls the FM spectrum of the diode laser and thus the fraction of the diode-laser power that is coupled to the frequency-doubling resonator. Using this technique, we have produced blue pulses of 40-mW peak power with rise and fall times of 5 ns and pulse durations as short as 10 ns. Nonperiodic pulse sequences produced with this technique were used to write data on magneto-optical disks.

© 1994 Optical Society of America

Blue-light generation by frequency doubling of an 810-nm cw GaAlAs diode laser in a quasi-phase-matched LiNbO₃ crystal

Ya-lin Lu, Lun Mao, and Nai-hen Ming
Opt. Lett. 19(14) 1037-1039 (1994)

250 mW of coherent blue 460-nm light generated by single-pass frequency doubling of the output of a mode-locked high-power diode laser in periodically poled KTP

D. Woll, J. Schumacher, A. Robertson, M. A. Tremont, R. Wallenstein, M. Katz, D. Eger, and A. Englander
Opt. Lett. 27(12) 1055-1057 (2002)

Tunable 397-nm light source for spectroscopy obtained by frequency doubling of a diode laser

K. Hayasaka, M. Watanabe, H. Imajo, R. Ohmukai, and S. Urabe
Appl. Opt. 33(12) 2290-2293 (1994)

1??W of blue 465-nm radiation generated by frequency doubling of the output of a high-power diode laser in critically phase-matched LiB₃O₅

D. Woll, B. Beier, K.-J. Boller, R. Wallenstein, M. Hagberg, and S. O’Brien
Opt. Lett. 24(10) 691-693 (1999)

Ultrahigh-frequency stabilization of a diode-pumped Nd:YAG laser with a high-power-acceptance photodetector

N. Uehara and K. Ueda
Opt. Lett. 19(10) 728-730 (1994)