Frequency-doubled diode laser for direct pumping of Ti:sapphire lasers

André Müller; Ole B. Jensen; Angelika Unterhuber; Tuan Le; Andreas Stingl; Karl-Heiz Hasler; Bernd Sumpf; Götz Erbert; Peter E. Andersen; Paul M. Petersen

doi:10.1117/12.906403

15 February 2012 Frequency-doubled diode laser for direct pumping of Ti:sapphire lasers

André Müller, Ole B. Jensen, Angelika Unterhuber, Tuan Le, Andreas Stingl, Karl-Heiz Hasler, Bernd Sumpf, Götz Erbert, Peter E. Andersen, Paul M. Petersen

Author Affiliations +

Proceedings Volume 8235, Solid State Lasers XXI: Technology and Devices; 82351F (2012) https://doi.org/10.1117/12.906403
Event: SPIE LASE, 2012, San Francisco, California, United States

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.

Citation Download Citation

André Müller, Ole B. Jensen, Angelika Unterhuber, Tuan Le, Andreas Stingl, Karl-Heiz Hasler, Bernd Sumpf, Götz Erbert, Peter E. Andersen, and Paul M. Petersen "Frequency-doubled diode laser for direct pumping of Ti:sapphire lasers", Proc. SPIE 8235, Solid State Lasers XXI: Technology and Devices, 82351F (15 February 2012); https://doi.org/10.1117/12.906403

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