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Proceedings Paper

Advances in GaN laser diodes for quantum sensors and optical atomic clocks
Author(s): Stephen P. Najda; Piotr Perlin; Mike Leszczyński; Szymon Stanczyk; Casper C. Clark; Thomas J. Slight; John Macarthur; Ludwig Prade; Loyd 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 [5s21S0-5p1P1] 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: 31 January 2020
PDF: 7 pages
Proc. SPIE 11288, Quantum Sensing and Nano Electronics and Photonics XVII, 112881V (31 January 2020); doi: 10.1117/12.2543348
Show Author Affiliations
Stephen P. Najda, TopGaN Ltd. (Poland)
Piotr Perlin, TopGaN Ltd. (Poland)
Mike Leszczyński, TopGaN Ltd. (Poland)
Szymon Stanczyk, TopGaN Ltd. (Poland)
Casper C. Clark, Helia Photonics Ltd. (United Kingdom)
Thomas J. Slight, Compound Semiconductor Technologies Global Ltd. (United Kingdom)
John Macarthur, Fraunhofer Ctr. for Applied Photonics (United Kingdom)
Ludwig Prade, Fraunhofer Ctr. for Applied Photonics (United Kingdom)
Loyd McKnight, Fraunhofer Ctr. for Applied Photonics (United Kingdom)

Published in SPIE Proceedings Vol. 11288:
Quantum Sensing and Nano Electronics and Photonics XVII
Manijeh Razeghi; Jay S. Lewis; Giti A. Khodaparast; Pedram Khalili, Editor(s)

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