Multilongitudinal mode operation in angled stripe buried heterostructure lasers
Journal Article
·
· J. Appl. Phys.; (United States)
The various index-guided lasers have superior device performance over gain-guided lasers but operate in single longitudinal mode rendering them unsuitable for use as optical sources in multimode optical fiber transmission systems because of the increased modal noise produced. In this experiment we show that multilongitudinal mode operation can be obtained in buried-heterostructure (BH) lasers throughout the entire output power range from threshold to catastrophic damage by angling the buried active stripes so that they are nonorthogonal to the cleaved facets by angles, theta> or approx. =5/sup 0/. These lasers also exhibit the various desirable characteristics of BH lasers with theta = 0/sup 0/ such as linearity in light-current, low spontaneous emission level, and abrupt turnon of lasing. The angles buried stripe caused no noticeable degradation of threshold current, I/sub th/ , or external differential quantum efficiency, eta/sub D/. The averaged I/sub th/ ranged between 16 to 20 mA in all lasers and eta/sub D/ increased with theta. In all cases, the lasers operated stably in the lowest order transverse mode.
- Research Organization:
- Bell Laboratories, Murray Hill, New Jersey 07974
- OSTI ID:
- 6537225
- Journal Information:
- J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 54:2; ISSN JAPIA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
CLEAVAGE
CONFIGURATION
CRYSTAL STRUCTURE
CURRENTS
DAMAGE
DATA
EFFICIENCY
ELECTRIC CURRENTS
EXPERIMENTAL DATA
FIBER OPTICS
HETEROJUNCTIONS
INFORMATION
JUNCTIONS
LASERS
MICROSTRUCTURE
NOISE
NUMERICAL DATA
OPTICAL PROPERTIES
ORIENTATION
OSCILLATION MODES
PERFORMANCE
PHYSICAL PROPERTIES
QUANTUM EFFICIENCY
REFRACTIVITY
SEMICONDUCTOR DEVICES
SEMICONDUCTOR JUNCTIONS
SEMICONDUCTOR LASERS
STABILITY
THRESHOLD CURRENT
WAVEGUIDES
420300* -- Engineering-- Lasers-- (-1989)
CLEAVAGE
CONFIGURATION
CRYSTAL STRUCTURE
CURRENTS
DAMAGE
DATA
EFFICIENCY
ELECTRIC CURRENTS
EXPERIMENTAL DATA
FIBER OPTICS
HETEROJUNCTIONS
INFORMATION
JUNCTIONS
LASERS
MICROSTRUCTURE
NOISE
NUMERICAL DATA
OPTICAL PROPERTIES
ORIENTATION
OSCILLATION MODES
PERFORMANCE
PHYSICAL PROPERTIES
QUANTUM EFFICIENCY
REFRACTIVITY
SEMICONDUCTOR DEVICES
SEMICONDUCTOR JUNCTIONS
SEMICONDUCTOR LASERS
STABILITY
THRESHOLD CURRENT
WAVEGUIDES