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High-power 1550 nm tapered DBR lasers fabricated using soft UV-nanoimprint lithography

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review


Original languageEnglish
Title of host publicationHigh-Power Diode Laser Technology and Applications XIV
Number of pages7
ISBN (Electronic)9781628419689
Publication statusPublished - 2016
Publication typeA4 Article in a conference publication
EventHigh-Power Diode Laser Technology and Applications XIV - San Francisco, United States
Duration: 15 Feb 201616 Feb 2016

Publication series

NameSPIE Conference Proceedings
ISSN (Print)0277-786X


ConferenceHigh-Power Diode Laser Technology and Applications XIV
CountryUnited States
CitySan Francisco


Paper reports the DBR-RWG surface grating design, the fabrication process, and the output characteristics of tapered DBR laser diodes for the applications, like for example LIDAR and range finding, that require eye-safe high-power single-mode coherent light sources. The fabricated regrowth-free DBR AlGaInAs/InP lasers exhibited a CW output power as high as 560 mW in single-mode operation at room temperature. At maximum output power the SMSR was 38 dB, proving the excellent behavior of the surface gratings. The tapered section enabled scaling the maximum CW power at room temperature from 125 mW to 560 mW, by increasing its length from 0.5 mm to 4.0 mm. The paper discusses the limitations and performance variation associated to the power scaling by using the tapered section length as a scaling parameter.


  • 1550 nm laser diode, DBR, Power scaling, Tapered laser diode

Publication forum classification

Field of science, Statistics Finland