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    High performances of very long (13.5mm) tapered laser emitting at 975 nm

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    Author
    Resneau, Patrick; Garcia, Michel; Lecomte, Michel; Robert, Yannick; Vinet, Eric; Parillaud, Olivier; Krakowski, Michel; Boiko, Dmitri L.
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    Abstract
    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.
    Publication Reference
    Novel In-Plane Semiconductor Lasers XV, San Francisco, CA (USA), pp. 97671J
    Year
    2016-03-15
    URI
    https://yoda.csem.ch/handle/20.500.12839/836
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