Broadband and narrowband terahertz generation and detection in GaSe1− xSx crystals S. A. Bereznaya, Z. V. Korotchenko, R. A. Redkin [et al.]
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ArticleSubject(s): терагерцовое излучение | селенид галлия | фазовое согласованиеGenre/Form: статьи в журналах Online resources: Click here to access online
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Journal of optics Vol. 19, № 11. P. 115503 (1-7)Abstract: Terahertz wave generation through optical rectification of femtosecond laser pulses and its detection in GaSe and GaSe1−x S x crystals with a relatively low (x = 0.04) and high (x = 0.29) content of sulfur was studied. The decrease of terahertz generation and detection efficiency at an increase of sulfur content in GaSe1−x S x was observed. The phase-matching conditions for electro-optical sampling in GaSe and GaSe1−x S x crystals were analyzed. The arising possibility to achieve the narrowing of terahertz detection bandwidth using thicker GaSe crystals was experimentally confirmed.
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Terahertz wave generation through optical rectification of femtosecond laser pulses and its detection in GaSe and GaSe1−x S x crystals with a relatively low (x = 0.04) and high (x = 0.29) content of sulfur was studied. The decrease of terahertz generation and detection efficiency at an increase of sulfur content in GaSe1−x S x was observed. The phase-matching conditions for electro-optical sampling in GaSe and GaSe1−x S x crystals were analyzed. The arising possibility to achieve the narrowing of terahertz detection bandwidth using thicker GaSe crystals was experimentally confirmed.
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