V. P. Duraev, M. A. Ladugin, I. S. Molodtsov, S. A. Voronchenko, S. V. Medvedev, N. V. Gul’tikov
- “Nolatech” Joint-Stock Company, Moscow
- Polyus Research and Development Institute named after M. F. Stel’makh, Moscow
Abstract: We report results of fabricating a 1064-nm tunable single-frequency semiconductor laser module with an external cavity based on a fibre Bragg grating written in a single-mode polarisation-maintaining optical fibre. Methods for discrete and smooth tuning of the radiation wavelength are considered. The laser module is capable of generating dynamically stable single-frequency radiation with a side-mode suppression of more than 40 dB, a generation line width of 100–500 kHz, and an output optical power of over 60 mW. The wavelength tuning of the laser module is 1.2 nm.
Keywords: semiconductor laser module, wavelength tuning, single-frequency lasing, external cavity, fibre Bragg grating, 1064 nm.
Received: 26.07.2022