Chinese Journal of Lasers, Volume. 46, Issue 4, 0401002(2019)
Compact Tunable External-Cavity Surface-Emitting Green Laser
By the use of a semiconductor gain chip with InGaAs multiple quantum wells as materials in the active region and the AlGaAs/AlAs, transparent to the pump light, as distributed Bragg reflectors, along with the end-pump geometry to simplify the device structure and an inserted etalon as the tuning element, an optically-pumped compact tunable external-cavity surface-emitting green laser is realized by the intra-cavity frequency doubling technology. The employed etalon narrows the laser linewidth as a tuning element. To prevent the second harmonic from returning to the gain chip, the etalon is coated with a high-reflectivity film at the wavelength of the second harmonic. The tuning range of the fundamental wave is over 10 nm and that of the second harmonic is 4 nm centering at 559 nm. The spectral linewidth of the second harmonic is 1.0 nm and the maximum output power is 65 mW.
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Xiaolang Qiu, Xuehua Chen, Renjiang Zhu, Peng Zhang, Heyang Guoyu, Yanrong Song. Compact Tunable External-Cavity Surface-Emitting Green Laser[J]. Chinese Journal of Lasers, 2019, 46(4): 0401002
Category: laser devices and laser physics
Received: Dec. 4, 2018
Accepted: Jan. 8, 2019
Published Online: May. 9, 2019
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