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Shastin, Valery und Zhukavin, Roman und Bekin, Nickolay und Tsyplenkov, Veniamin und Radamson, Henry und Pavlov, Sergey und Hübers, Heinz-Wilhelm (2008) THz amplification based on impurity-and transitions in Si/GeSi heterostructures. In: 4th International Conference on Advanced Optoelectronics and Lasers, Seiten 422-424. CAOL 2008 (4. Annual Conference), [2008-09-29 - 2008-10-04], Alushta (Ukraine). ISBN 978-1-4244-1974-6
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Kurzfassung
Terahertz stimulated emission based on impurity-band optical transitions of phosphor donor centers embedded in Si/GeSi heterostructures is reported. THz emission was measured from selectively doped Si/GeSi structures excited by CO2 laser radiation. Amplification of 8-9 THz emission with the coefficient of 2-3 1/cm is obtained for structures with gently strained selectively doped Si layers (Nd ≈ 10^17 cm^-3) under pump density of 200 kW/cm2. Corresponding net gain taking into account small overlapping of active layer with THz mode is estimated to be ~ 200-300 1/cm. Experimental data demonstrate the possibility to use impurity-band transitions for THz laser action. The capability of Si/GeSi quantum cascade scheme which can support inverted population on donor-continuum transitions of Si conduction band is also analyzed.
| Dokumentart: | Konferenzbeitrag (Poster) | ||||||||||||||||||||||||
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| Titel: | THz amplification based on impurity-and transitions in Si/GeSi heterostructures | ||||||||||||||||||||||||
| Autoren: |
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| Datum: | September 2008 | ||||||||||||||||||||||||
| Erschienen in: | 4th International Conference on Advanced Optoelectronics and Lasers | ||||||||||||||||||||||||
| Referierte Publikation: | Nein | ||||||||||||||||||||||||
| In Open Access: | Nein | ||||||||||||||||||||||||
| In SCOPUS: | Nein | ||||||||||||||||||||||||
| In ISI Web of Science: | Nein | ||||||||||||||||||||||||
| Seitenbereich: | Seiten 422-424 | ||||||||||||||||||||||||
| ISBN: | 978-1-4244-1974-6 | ||||||||||||||||||||||||
| Status: | veröffentlicht | ||||||||||||||||||||||||
| Stichwörter: | THz, Si-based heterostructure | ||||||||||||||||||||||||
| Veranstaltungstitel: | CAOL 2008 (4. Annual Conference) | ||||||||||||||||||||||||
| Veranstaltungsort: | Alushta (Ukraine) | ||||||||||||||||||||||||
| Veranstaltungsart: | internationale Konferenz | ||||||||||||||||||||||||
| Veranstaltungsdatum: | [2008-09-29 - 2008-10-04] | ||||||||||||||||||||||||
| Veranstalter : | IEEE Lasers and Electro-Optics Society (LEOS) | ||||||||||||||||||||||||
| HGF - Forschungsbereich: | Verkehr und Weltraum (alt) | ||||||||||||||||||||||||
| HGF - Programm: | Weltraum (alt) | ||||||||||||||||||||||||
| HGF - Programmthema: | W EW - Erforschung des Weltraums | ||||||||||||||||||||||||
| DLR - Schwerpunkt: | Weltraum | ||||||||||||||||||||||||
| DLR - Forschungsgebiet: | W EW - Erforschung des Weltraums | ||||||||||||||||||||||||
| DLR - Teilgebiet (Projekt, Vorhaben): | W - Projekt SOFIA (alt) | ||||||||||||||||||||||||
| Standort: | Berlin-Adlershof | ||||||||||||||||||||||||
| Institute & Einrichtungen: | Institut für Planetenforschung > Terahertz- und Infrarotsensorik | ||||||||||||||||||||||||
| Hinterlegt von: | Pavlov, Dr. Sergey | ||||||||||||||||||||||||
| Hinterlegt am: | 25 Nov 2008 | ||||||||||||||||||||||||
| Letzte Änderung: | 15 Jan 2010 00:21 |
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