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All optical control of comb-like coherent acoustic phonons in multiple quantum well structures through double-pump-pulse pump-probe experiments

Li, Chiangxiu und Dekorsy, Thomas und Hettich, Mike (2019) All optical control of comb-like coherent acoustic phonons in multiple quantum well structures through double-pump-pulse pump-probe experiments. Optics Express, 27 (13), Seiten 18706-18730. Optical Society of America. doi: 10.1364/OE.27.018706. ISSN 1094-4087.

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Offizielle URL: https://doi.org/10.1364/OE.27.018706

Kurzfassung

We present an advancement in applications of ultrafast optics in picosecond laser ultrasonics - laser-induced comb-like coherent acoustic phonons are optically controlled in a In0.27Ga0.73As/GaAs multiple quantum well (MQW) structure by a high-speed asynchronous optical sampling (ASOPS) system based on two GHz Yb:KYW lasers. Two successive pulses from the same pump laser are used to excite the MQW structure. The second pump light pulse has a tunable time delay with respect to the first one and can be also tuned in intensity, which enables the amplitude and phase modulation of acoustic phonons. This yields rich temporal acoustic patterns with suppressed or enhanced amplitudes, various wave-packet shapes, varied wave-packet widths, reduced wave-packet periods and varied phase shifts of single-period oscillations within a wave-packet. In the frequency domain, the amplitude and phase shift of the individual comb component present a second-pump-delay-dependent cosine-wave-like and sawtooth-wave-like variation, respectively, with a modulation frequency equal to the comb component frequency itself. The variations of the individual component amplitude and phase shift by tuning the second pump intensity exhibit an amplitude valley and an abrupt phase jump at the ratio around 1:1 of the two pump pulse intensities for certain time delays. A simplified model, where both generation and detection functions are assumed as a cosine stress wave enveloped by Gaussian or rectangular shapes in an infinite periodic MQW structure, is developed in order to interpret acoustic manipulation in the MQW sample. The modelling agrees well with the experiment in a wide range of time delays and intensity ratios. Moreover, by applying a heuristic-analytical approach and nonlinear corrections, the improved calculations reach an excellent agreement with experimental results and thus enable to predict and synthesize coherent acoustic wave patterns in MQW structures.

elib-URL des Eintrags:https://elib.dlr.de/128584/
Dokumentart:Zeitschriftenbeitrag
Titel:All optical control of comb-like coherent acoustic phonons in multiple quantum well structures through double-pump-pulse pump-probe experiments
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iD
Li, ChiangxiuKonstanz University, Department of Physics and Applied Optics
Dekorsy, ThomasThomas.Dekorsy (at) dlr.dehttps://orcid.org/0000-0003-2257-2854
Hettich, MikeDepartment of Physics and Center for Applied Photonics, University of Konstanz, Germany
Datum:2019
Erschienen in:Optics Express
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Ja
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:27
DOI:10.1364/OE.27.018706
Seitenbereich:Seiten 18706-18730
Verlag:Optical Society of America
Name der Reihe:Optics Express
ISSN:1094-4087
Status:veröffentlicht
Stichwörter:ultrafast optics
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Flugzeuge
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AR - Aircraft Research
DLR - Teilgebiet (Projekt, Vorhaben):L - Laserforschung und Technologie (alt)
Standort: Stuttgart
Institute & Einrichtungen:Institut für Technische Physik
Hinterlegt von: Heidenreich, Angela
Hinterlegt am:11 Nov 2019 12:35
Letzte Änderung:10 Dez 2019 16:34

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