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Proceedings Paper

GaN laser diodes for quantum sensors and optical atomic clocks
Author(s): S. P. Najda; P. Perlin; M. Leszczyński; S. Stanczyk; C. C. Clark; T. J. Slight; J. Macarthur; L. Prade; L. McKnight
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Paper Abstract

Quantum technologies containing key GaN laser components will enable a new generation of high precision quantum sensors, optical atomic clocks and secure communication systems for many applications such as next generation navigation, gravity mapping and timing since the AlGaInN material system allows for laser diodes to be fabricated over a wide range of wavelengths from the u.v. to the visible. We report our latest results on a range of AlGaInN diode-lasers targeted to meet the linewidth, wavelength and power requirements suitable for optical clocks and cold-atom interferometry systems. This includes the [5s2S1/2-5p2P1/2] cooling transition in strontium+ ion optical clocks at 422 nm, the [5s2 1S0-5p1P1] cooling transition in neutral strontium clocks at 461 nm and the [5s2s1/2 – 6p2P3/2] transition in rubidium at 420 nm. Several approaches are taken to achieve the required linewidth, wavelength and power, including an extended cavity laser diode (ECLD) system and an on-chip grating, distributed feedback (DFB) GaN laser diode.

Paper Details

Date Published: 30 March 2020
PDF: 7 pages
Proc. SPIE 11347, Quantum Technologies 2020, 1134714 (30 March 2020); doi: 10.1117/12.2552468
Show Author Affiliations
S. P. Najda, TopGaN Ltd. (Poland)
P. Perlin, TopGaN Ltd. (Poland)
M. Leszczyński, TopGaN Ltd. (Poland)
S. Stanczyk, TopGaN Ltd. (Poland)
C. C. Clark, Helia Photonics Ltd. (United Kingdom)
T. J. Slight, Compound Semiconductor Technologies Global Ltd. (United Kingdom)
J. Macarthur, Fraunhofer Ctr. for Applied Photonics (United Kingdom)
L. Prade, Fraunhofer Ctr. for Applied Photonics (United Kingdom)
L. McKnight, Fraunhofer Ctr. for Applied Photonics (United Kingdom)

Published in SPIE Proceedings Vol. 11347:
Quantum Technologies 2020
Eleni Diamanti; Sara Ducci; Nicolas Treps; Shannon Whitlock, Editor(s)

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