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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. Conference on Solid State Lasers XXVII - Technology and Devices, San Francisco, USA.
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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) (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/ | ||||||||||||||||||||||||||||||
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| Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||||||||||||||||
| Title: | GHz Yb:KYW oscillators in time-resolved spectroscopy | ||||||||||||||||||||||||||||||
| Authors: |
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| Date: | 15 February 2018 | ||||||||||||||||||||||||||||||
| Refereed publication: | No | ||||||||||||||||||||||||||||||
| Open Access: | No | ||||||||||||||||||||||||||||||
| Gold Open Access: | No | ||||||||||||||||||||||||||||||
| In SCOPUS: | No | ||||||||||||||||||||||||||||||
| In ISI Web of Science: | No | ||||||||||||||||||||||||||||||
| Status: | Published | ||||||||||||||||||||||||||||||
| 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: | 07 Jan 2019 14:08 |
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