Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

GaN laser diodes for quantum sensors, clocks, systems and computing

: Najda, S.P.; Perlin, P.; Leszczynski, M.; Stanczyk, S.; Clark, C.C.; Slight, T.J.; Macarthur, J.; Prade, L.; McKnight, L.


Donkor, E. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Quantum Information Science, Sensing, and Computation XI : 18 April 2019, Baltimore, Maryland, United States
Bellingham, WA: SPIE, 2019 (Proceedings of SPIE 10984)
ISBN: 978-1-5106-2634-8
ISBN: 978-1-5106-2633-1
Paper 1098406, 6 pp.
Conference "Quantum Information Science, Sensing, and Computation" <11, 2019, Baltimore/Md.>
Conference Paper
Fraunhofer CAP ()

Quantum technologies containing key GaN laser components will enable a new generation of precision 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 [5s(2)S(1/2)-5p(2)P(1/2)] cooling transition in strontium(+) ion optical clocks at 422 nm, the [5s(2)(1)S(0)-5p(1)P(1)] cooling transition in neutral strontium clocks at 461 nm and the [5s(2)s(1/2) - 6p(2)P(3/2)] 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.