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Proceedings Paper

Frequency-doubled diode laser for direct pumping of Ti:sapphire lasers
Author(s): André Müller; Ole B. Jensen; Angelika Unterhuber; Tuan Le; Andreas Stingl; Karl-Heiz Hasler; Bernd Sumpf; Götz Erbert; Peter E. Andersen; Paul M. Petersen
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Paper Abstract

A single-pass frequency doubled high-power tapered diode laser emitting nearly 1.3 W of green light suitable for direct pumping of Ti:sapphire lasers generating ultrashort pulses is demonstrated. The pump efficiencies reached 75 % of the values achieved with a commercial solid-state pump laser. However, the superior electro-optical efficiency of the diode laser improves the overall efficiency of the Ti:sapphire laser by a factor > 2. The optical spectrum emitted by the Ti:sapphire laser shows a spectral width of 112 nm (FWHM). Based on autocorrelation measurements, pulse widths of less than 20 fs are measured. These results open the opportunity of establishing diode laser pumped Ti:sapphire lasers for e.g. biophotonic applications like retinal optical coherence tomography or pumping of photonic crystal fibers for CARS microscopy.

Paper Details

Date Published: 15 February 2012
PDF: 7 pages
Proc. SPIE 8235, Solid State Lasers XXI: Technology and Devices, 82351F (15 February 2012); doi: 10.1117/12.906403
Show Author Affiliations
André Müller, Technical Univ. of Denmark (Denmark)
Ole B. Jensen, Technical Univ. of Denmark (Denmark)
Angelika Unterhuber, Femtolasers Produktions GmbH (Austria)
Tuan Le, Femtolasers Produktions GmbH (Austria)
Andreas Stingl, Femtolasers Produktions GmbH (Austria)
Karl-Heiz Hasler, Ferdinand-Braun-Institut (Germany)
Bernd Sumpf, Ferdinand-Braun-Institut (Germany)
Götz Erbert, Ferdinand-Braun-Institut (Germany)
Peter E. Andersen, Technical Univ. of Denmark (Denmark)
Paul M. Petersen, Technical Univ. of Denmark (Denmark)

Published in SPIE Proceedings Vol. 8235:
Solid State Lasers XXI: Technology and Devices
W. Andrew Clarkson; Ramesh K. Shori, Editor(s)

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