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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Reducing the phase noise in diode lasers

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Rincon Celis, R. L. [1] ; Martinelli, M. [1]
Total Authors: 2
[1] Univ Sao Paulo, Inst Phys, Rua Matao Tr R 187, BR-05508090 Sao Paulo, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: OPTICS LETTERS; v. 44, n. 13, p. 3394-3397, JUL 1 2019.
Web of Science Citations: 0

Diode lasers are widely used in atomic physics given their narrow linewidth and wavelength tunability. Nevertheless, although they present low noise for their intensity, excessive noise in the phase limits their application in quantum optics. Looking for reduction of this phase noise, we built and characterized a ring laser, using a semiconductor-tapered amplifier as the gain medium. We were able to reduce the phase noise of a diode laser to a factor of 10 above shot-noise level, bringing it closer to a useful coherent state for applications in quantum information. (C) 2019 Optical Society of America (AU)

FAPESP's process: 15/18834-0 - Exploring quantum information with atoms, crystals and chips
Grantee:Marcelo Martinelli
Support type: Research Projects - Thematic Grants