Tunable quantum cascade lasers operating in the terahertz frequency range are demonstrated. By using an external cavity based on the reflection from a movable mirror, both broad and fine tuning of the frequency are achieved by varying the cavity length. Coarse tuning up to 3 cm-1 is obtained near the center frequency of 4.8 THz (∼160 cm-1), and continuous mode-hop-free tuning is observed over ∼ 0.4 cm-1, nearly corresponding to the cavity free spectral range.

Tunable terahertz quantum cascade lasers with an external cavity

TREDICUCCI, ALESSANDRO
;
2007

Abstract

Tunable quantum cascade lasers operating in the terahertz frequency range are demonstrated. By using an external cavity based on the reflection from a movable mirror, both broad and fine tuning of the frequency are achieved by varying the cavity length. Coarse tuning up to 3 cm-1 is obtained near the center frequency of 4.8 THz (∼160 cm-1), and continuous mode-hop-free tuning is observed over ∼ 0.4 cm-1, nearly corresponding to the cavity free spectral range.
Jihua, Xu; JOEL M., Hensley; D. B., Fenner; RICHARD P., Green; Lukas, Mahler; Tredicucci, Alessandro; MARK G., Allen; Fabio, Beltram; HARVEY E., Beere; DAVID A., Ritchie
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11568/495204
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