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Q: Quantenoptik und Photonik
Q 4: Festkörperlaser
Q 4.8: Vortrag
Montag, 22. März 2004, 15:45–16:00, HS 218
Micro-structured carriers for miniaturized diode-pumped solid-state lasers — •Ralf Koch1, Stefan Bjurshagen2, Sandra Johansson2, and Fredrik Laurell2 — 1Acreo AB, Electrum 236, 164 40 Kista, Sweden — 2Laser Physics and Quantum Optics, Department of Physics, Royal Institute of Technology, 106 91 Stockholm, Sweden
We have previously reported on the development of a novel and versatile design concept for miniature diode-pumped solid-state lasers. A silicon microbench with wet-etched V-grooves for the precise alignment of all components in DPSSL is used to obtain efficient heat removal from the laser crystal [1]. Using this concept we have achieved miniature lasers with cw power of 6.7 W, a really amazing performance considering the lateral dimensions of the laser crystal of just about 1 mm. Recently, we have expanded this concept to new carrier materials. An interesting example is a polymer encapsulated diode-pumped Nd:YAG laser [2]. Large production volumes at a very low cost are possible. This development has been enabled by progress in commercially available polymers with high thermal conductivity. The latest results from the micro-structured carrier concept for DPSSL are reported. Passively Q-switched lasers mounted in a silicon microbench or in a polymer encapsulation are presented. The Q-switched silicon microbench laser gave an average output power of 2 W in 1.4 ns pulses.
1. Å. Claesson et al.; El. Lett. 36 (5), 443-444 (2000)
2. D. Evekull et al.; El. Lett. 39 (20), 1446-1448 (2003)