29 November 2011 Direct pumping of ultrashort Ti:sapphire lasers by a frequency doubled diode laser
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Proceedings Volume 8311, Optical Sensors and Biophotonics III; 831110 (2011) https://doi.org/10.1117/12.905884
Event: SPIE/OSA/IEEE Asia Communications and Photonics, 2011, Shanghai, China
Abstract
A simple and robust diode laser system emitting 1.28 W of green light suitable for pumping an ultrafast Ti:sapphire laser is presented. To classify our results, the diode laser is compared to a standard, commercially available diode pumped solid-state (DPSS) laser system pumping the same oscillator. When using our diode laser system, the optical conversion efficiencies from green to near-infrared light reduces to 75 % of the values achieved with the commercial pump laser. Despite this reduction the overall efficiency of the Ti:sapphire laser is still increased by a factor > 2 due to the superior electro-optical efficiency of the diode laser. Autocorrelation measurements show that pulse widths of less than 20 fs can be expected with an average power of 52 mW when using our laser. These results indicate the high potential of direct diode laser pumped Ti:sapphire lasers to be used in applications like retinal optical coherence tomography (OCT) or pumping of photonic crystal fibers for CARS (coherent anti-stokes Raman spectroscopy) microscopy.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
André Müller, André Müller, Ole Bjarlin Jensen, Ole Bjarlin Jensen, Angelika Unterhuber, Angelika Unterhuber, Tuan Le, Tuan Le, Andreas Stingl, Andreas Stingl, Karl-Heinz Hasler, Karl-Heinz Hasler, Bernd Sumpf, Bernd Sumpf, Götz Erbert, Götz Erbert, Peter E. Andersen, Peter E. Andersen, Paul Michael Petersen, Paul Michael Petersen, } "Direct pumping of ultrashort Ti:sapphire lasers by a frequency doubled diode laser", Proc. SPIE 8311, Optical Sensors and Biophotonics III, 831110 (29 November 2011); doi: 10.1117/12.905884; https://doi.org/10.1117/12.905884
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