Strong photoacoustic pulses generated in TlGaSe2 layered crystals

Periodic deflections of infrared probe beam in TlGaSe2 crystal after its lateral excitation by laser pulse with photon energy near the band gap are observed. Such deflections arise from travelling of the acoustic pulse within sample which, in turn, is produced by optical pump pulse through photoacou...

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Bibliographische Detailangaben
Hauptverfasser:	Grivickas, V, Bikbajevas, V, Gavryushin, V, Linnros, J
Format:	Tagungsbericht
Sprache:	eng
Schlagworte:	Acoustic pulse Band gaps Crystals Energy gap Excitation Generation mechanism Infrared probes Laser excitation Lateral excitation Layered crystals Light penetration depth Optical pumping Optical pumps Penetration depth Periodic deflection Photoacoustic effect Photoacoustic pulse Photon energy Physics Pulsed laser applications
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