GHz Yb:KYW oscillators in time-resolved spectroscopy

Changxiu Li; Nico Krauß; Gerhard Schäfer; Lukas Ebner; Oliver Kliebisch; Johannes Schmidt; Stephan Winnerl; Mike Hettich; Thomas Dekorsy

doi:10.1117/12.2297568

15 February 2018 GHz Yb:KYW oscillators in time-resolved spectroscopy

Changxiu Li, Nico Krauß, Gerhard Schäfer, Lukas Ebner, Oliver Kliebisch, Johannes Schmidt, Stephan Winnerl, Mike Hettich, Thomas Dekorsy

Author Affiliations +

Proceedings Volume 10511, Solid State Lasers XXVII: Technology and Devices; 105112I (2018) https://doi.org/10.1117/12.2297568
Event: SPIE LASE, 2018, San Francisco, California, United States

Abstract

A high-speed asynchronous optical sampling system (ASOPS) based on Yb:KYW oscillators with 1-GHz repetition rate is reported. Two frequency-offset-stabilized diode-pumped Yb:KYW oscillators are employed as pump and probe source, respectively. The temporal resolution of this system within 1-ns time window is limited to 500 fs and the noise floor around 10^-6(ΔR/R) close to the shot-noise level is obtained within an acquisition time of a few seconds. Coherent acoustic phonons are investigated by measuring multilayer semiconductor structures with multiple quantum wells and aluminum/silicon membranes in this ASOPS system. A wavepacket-like phonon sequence at 360 GHz range is detected in the semiconductor structures and a decaying sequence of acoustic oscillations up to 200 GHz is obtained in the aluminum/silicon membranes. Coherent acoustic phonons generated from semiconductor structures are further manipulated by a double pump scheme through pump time delay control.

Citation Download Citation

Changxiu Li, Nico Krauß, Gerhard Schäfer, Lukas Ebner, Oliver Kliebisch, Johannes Schmidt, Stephan Winnerl, Mike Hettich, and Thomas Dekorsy "GHz Yb:KYW oscillators in time-resolved spectroscopy", Proc. SPIE 10511, Solid State Lasers XXVII: Technology and Devices, 105112I (15 February 2018); https://doi.org/10.1117/12.2297568

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