Generation of subpicosecond coherent optical pulses by passive mode locking of an AlGaAs diode laser

Journal Article · Fri Jan 15 04:00:00 EST 1982 · Appl. Phys. Lett.; (United States)

DOI:https://doi.org/10.1063/1.93023· OSTI ID:6019856

Yokoyama, H; Ito, H; Inaba, H

Subpicosecond coherent optical pulses as short as 0.58 ps were generated for the first time by passive mode locking of an AlGaAs double heterostructure diode laser. It was realized by a simple configuration made of a conventional AlGaAs diode laser without antireflection coatings on both facets, which was aged and exhibiting self-pulsation, placed in an external cavity. When the external cavity length was shorter than about 60 mm, almost complete mode locking was observed over the oscillation spectrum of 3.5 nm in width. Based on the second-harmonic generation autocorrelation measurement, ultrashort coherent optical pulses from 0.58 to 1.2 ps in duration were demonstrated by increasing the external cavity length together with the proper control of the optical feedback effect and the pumping dc current.

• Research Organization: Research Institute of Electrical Communication, Tohoku University, Katahira 2-1-1, Sendai 980, Japan
• OSTI ID: 6019856
• Journal Information: Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 40:2; ISSN APPLA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
AGING
ALUMINIUM ARSENIDES
ALUMINIUM COMPOUNDS
ANTIREFLECTION COATINGS
ARSENIC COMPOUNDS
ARSENIDES
COATINGS
COHERENT RADIATION
CONFIGURATION
CORRELATIONS
DATA
DIMENSIONS
ELECTROMAGNETIC RADIATION
EXPERIMENTAL DATA
FEEDBACK
GALLIUM ARSENIDES
GALLIUM COMPOUNDS
HARMONICS
HETEROJUNCTIONS
INFORMATION
JUNCTIONS
LASER CAVITIES
LASERS
LENGTH
MODE LOCKING
NUMERICAL DATA
OSCILLATIONS
PNICTIDES
PULSES
RADIATIONS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES
SEMICONDUCTOR JUNCTIONS
SEMICONDUCTOR LASERS
SPECTRA
SURFACES