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GHz Yb:KYW oscillators in time-resolved spectroscopy

Li, CX and Kraus, N. and Schaefer, G. and Ebner, Lukas and Kliebisch, Oliver and Schmidt, J. and Winnerl, S. and Hettich, Mike and Dekorsy, Thomas (2018) GHz Yb:KYW oscillators in time-resolved spectroscopy. In: Proceedings of SPIE - The International Society for Optical Engineering. Conference on Solid State Lasers XXVII - Technology and Devices, San Francisco, USA. ISSN 0277-786X.

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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) (Delta R/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.

Item URL in elib:https://elib.dlr.de/120240/
Document Type:Conference or Workshop Item (Speech)
Title:GHz Yb:KYW oscillators in time-resolved spectroscopy
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Li, CXKonstanz UniversityUNSPECIFIED
Kraus, N.Konstanz UniversityUNSPECIFIED
Schaefer, G.Konstanz UniversityUNSPECIFIED
Ebner, LukasKonstanz UniversityUNSPECIFIED
Kliebisch, OliverKonstanz UniversityUNSPECIFIED
Winnerl, S.s.winnerl (at) hzdr.deUNSPECIFIED
Hettich, MikeKonstanz UniversityUNSPECIFIED
Dekorsy, ThomasThomas.Dekorsy (at) dlr.dehttps://orcid.org/0000-0003-2257-2854
Date:15 February 2018
Journal or Publication Title:Proceedings of SPIE - The International Society for Optical Engineering
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Ultrafast spectroscopy; Yb:KYW oscillator; coherent acoustic phonon
Event Title:Conference on Solid State Lasers XXVII - Technology and Devices
Event Location:San Francisco, USA
Event Type:international Conference
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Laser Research and Technology (old)
Location: Stuttgart
Institutes and Institutions:Institute of Technical Physics
Deposited By: Heidenreich, Angela
Deposited On:07 Jan 2019 14:08
Last Modified:11 Mar 2022 11:06

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