Wide range thermal and athermal operation of slotted surface grating lasers
Citation:
Mickus D, Mckenna R, Murphy C, Donegan JF. Wide range thermal and athermal operation of slotted surface grating lasers. Optics Express. 2021 May 24;29(11):16893-16903Download Item:
Abstract:
Athermalisation is a procedure in which the wavelength of a semiconductor laser
remains unchanged even as the temperature is altered. This is achieved by altering the currents
that flow through the laser so as to maintain the wavelength and avoid mode hops. In this study,
we demonstrate that lasers operating with a large red-shift with respect to the gain peak yield the
best performance in terms of the highest temperature operation and also in terms of the widest
athermal operating range. In particular, a device with red detuning of approximately 25 nm yields
the best results. This device is athermalised continuously (without mode hops) from 5 to 106 oC,
and discontinuously to 115 oC while maintaining wavelength stability of ±0.4 GHz/0.003 nm
and side mode suppression ratio of above 40 dB in most of the continuous range and above 30 dB
in the discontinuous regime. Operating in this manner will enable semiconductor lasers to be
used without a thermoelectric cooler in applications where the temperature changes substantially.
Sponsor
Grant Number
Science Foundation Ireland
15/IA/2854
Author's Homepage:
http://people.tcd.ie/jdonegan
Author: Donegan, John
Type of material:
Journal ArticleCollections
Series/Report no:
Optics Express;29;
11;
Availability:
Full text availableKeywords:
Athermalisation, semiconductor laser, temperatureDOI:
http://dx.doi.org/10.1364/OE.422978Metadata
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