Operation of individual diode lasers as a coherent ensemble controlled by a spatial filter within an external cavity

Journal Article · Tue Jan 15 04:00:00 EST 1985 · Appl. Phys. Lett.; (United States)

DOI:https://doi.org/10.1063/1.95711· OSTI ID:6219957

Rediker, R H; Schloss, R P; Van Ruyven, L J

Five diode gain elements (diode lasers with one facet antireflection coated) have been controlled to operate coherently with each other by a spatial filter placed between the antireflection coated facet and the mirror of an external cavity which provides the feedback for laser operation. The locking of the lasers is relatively insensitive to phase adjustment in each laser path. Locking has occurred with lasers whose output wavelength when operating individually differed by 60 A. It is expected that the maximum tolerance to wavelength difference is much larger because lasers used were selected so simple individual temperature control could bring them into wavelength coincidence. These results point to the feasibility of placing well over a thousand diode lasers in an external cavity with coherent output.

• Research Organization: Department of Electrical Engineering and Computer Science and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
• OSTI ID: 6219957
• Journal Information: Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 46:2; ISSN APPLA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
ANTIREFLECTION COATINGS
COATINGS
COUPLING
FEASIBILITY STUDIES
FEEDBACK
FILTERS
LASER CAVITIES
LASER MIRRORS
LASERS
MIRRORS
MODE LOCKING
OPERATION
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS