In situ characterization of semiconductor saturable absorber mirrors in an operating Yb:KGW mode-locked laser |
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Authors: | Paunescu Gabriela Hein Joachim Sauerbrey Roland Richter Wolfgang |
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Institution: | Institut für Optik und Quantenelektronik, Friedrich-Schiller-Universit?t, Jena, Germany. paunescu@ioq.uni-jena.de |
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Abstract: | We report in situ characterization of a semiconductor saturable absorber mirror (SESAM) in an operating Yb:KGW mode-locked laser. The technique may be described as a pump-probe experiment in which the intracavity beam acts as a pump beam while the output of the same laser is used as a test beam for the SESAM reflectivity. At zero delay, the probe pulse overlaps in time with the subsequent intracavity pulse. The method is an alternative to standard pump-probe measurements in situations where the intracavity parameters such as energy fluence onto the SESAM, pulse length, and center wavelength cannot be achieved simultaneously with available lasers. |
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