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Proceedings Paper

Frequency doubling of picosecond pulses generated by a monolithic DFB tapered MOPA in a ppMgO:LN channel waveguide
Author(s): D. Jedrzejczyk; S. Riecke; R. Güther; K. Lauritsen; K. Paschke
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Paper Abstract

In this work, we investigate experimentally second-harmonic generation (SHG) of pulsed near-infrared (NIR) diode laser radiation in a nonlinear crystal with a ridge waveguide structure. Pulses at 1064 nm with a pulse energy of 560 pJ, a peak power of 3.2 W and a pulse length of 138 ps are generated at a repetition rate of 10 MHz by a monolithic DFB (Distributed Feedback) tapered MOPA (Master Oscillator Power Amplifier). For frequency doubling, a periodically poled MgO-doped lithium niobate crystal with a ridge waveguide structure is used. During SHG, a dependence of the second-harmonic (SH) pulse duration on the NIR pulse energy as well as a distinctive influence of the waveguide structure on the beam quality is observed. A maximum SH peak power at 532 nm of 0.75 W and an opto-optical conversion efficiency of 24 % are achieved. Furthermore, an influence of the spectral distribution of the NIR laser radiation on the SHG conversion efficiency is observed.

Paper Details

Date Published: 18 May 2011
PDF: 7 pages
Proc. SPIE 8071, Nonlinear Optics and Applications V, 80710N (18 May 2011); doi: 10.1117/12.886835
Show Author Affiliations
D. Jedrzejczyk, Ferdinand-Braun-Institut (Germany)
S. Riecke, PicoQuant GmbH (Germany)
R. Güther, Ferdinand-Braun-Institut (Germany)
K. Lauritsen, PicoQuant GmbH (Germany)
K. Paschke, Ferdinand-Braun-Institut (Germany)

Published in SPIE Proceedings Vol. 8071:
Nonlinear Optics and Applications V
Mario Bertolotti, Editor(s)

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