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15 March 2016 High performances of very long (13.5mm) tapered laser emitting at 975 nm
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Proceedings Volume 9767, Novel In-Plane Semiconductor Lasers XV; 97671J (2016)
Event: SPIE OPTO, 2016, San Francisco, California, United States
Mode-locked semiconductor laser technology is a promising technology candidate considered by European Space Agency (ESA) for optical metrology systems and other space applications in the context of high-precision optical metrology, in particular for High Accuracy Absolute Long Distance Measurement. For these applications, we have realised a multi-section monolithic-cavity tapered laser diode with a record cavity length of 13.5 mm. The laser operates at 975 nm wavelength. It is designed for the emission of ultra-short optical pulses (<1 ps) at a repetition rate of 3 GHz with an average optical power of 600 mW. It is based on a MOVPE grown laser structure with Aluminium free active region enabling high optical gain, low internal losses and low series resistance. The first results obtained under CW pumping of such centimetre-long laser at 20 °C heatsink temperature show the lasing threshold current as low as 1.27 A and the differential external efficiency as high as 0.55 W/A.
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P. Resneau, M. Garcia, M. Lecomte, Y. Robert, E. Vinet, O. Parillaud, M. Krakowski, and D. L. Boiko "High performances of very long (13.5mm) tapered laser emitting at 975 nm", Proc. SPIE 9767, Novel In-Plane Semiconductor Lasers XV, 97671J (15 March 2016);

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