Frequency locking of single-mode 3.5-THz quantum cascade lasers using a gas cell

Frequency locking of single-mode 3.5-THz quantum cascade lasers using a gas cell

We report frequency locking of two 3.5-THz third-order distributed feedback (DFB)quantum cascade lasers(QCLs) by using methanol molecular absorption lines, a proportional-integral-derivative controller, and a NbN bolometer. We show that the free-running linewidths of the QCLs are dependent on the el...

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Bibliographic Details
Main Authors: Ren, Y. (Author), Hovenier, J. N. (Author), Cui, M. (Author), Hayton, D. J. (Author), Gao, J. R. (Author), Klapwijk, T. M. (Author), Shi, S. C. (Author), Reno, J. L. (Author), Kao, Tsung-Yu (Contributor), Hu, Qing (Contributor)
Other Authors: Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science (Contributor)
Format: Article
Language:English
Published: American Institute of Physics (AIP), 2014-05-01T19:56:11Z.
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