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 (similar to 160 cm(-1)), and continuous mode-hop-free tuning is observed over similar to 0.4 cm(-1), nearly corresponding to the cavity free spectral range. (c) 2007 American Institute of Physics.
Tunable terahertz quantum cascade lasers with an external cavity
Tredicucci A;
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 (similar to 160 cm(-1)), and continuous mode-hop-free tuning is observed over similar to 0.4 cm(-1), nearly corresponding to the cavity free spectral range. (c) 2007 American Institute of Physics.File in questo prodotto:
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