Phase noise characteristics of single mode semiconductor lasers with optical feedback

Journal Article · Sun Jan 01 00:00:00 EST 1984 · Appl. Phys. Lett.; (United States)

DOI:https://doi.org/10.1063/1.94573· OSTI ID:5509419

Chen, Y C

The phase noise characteristics of single mode semiconductor lasers with optical feedback have been studied. A correlation is found between the suppression of the low-frequency noise and the enhancement of the high-frequency noise near the relaxation oscillation frequency. Contrary to previous analyses, the low-frequency noise is minimized when the reflected light is 70/sup 0/--90/sup 0/ out of phase with respect to that inside the diode laser cavity. A calculation of the laser frequency fluctuation spectrum, taking into account the amplitude-phase coupling of the laser field, agrees with the observation. A new explanation is proposed for the feedback-induced phase noise reduction effect.

• Research Organization: Optical Information Systems, Incorporated, Elmsford, New York 10523
• OSTI ID: 5509419
• Journal Information: Appl. Phys. Lett.; (United States), Vol. 44:1
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
LASER RADIATION
FLUCTUATIONS
MODE CONTROL
SEMICONDUCTOR LASERS
FEEDBACK
NOISE
INHIBITION
LASER CAVITIES
CONTROL
ELECTROMAGNETIC RADIATION
LASERS
RADIATIONS
SEMICONDUCTOR DEVICES
VARIATIONS
420300* - Engineering- Lasers- (-1989)