Leaky-guided channeled substrate planar (LCSP)

Journal Article · Sat Jul 01 04:00:00 EDT 1989 · IEEE J. Quant. Electron.; (United States)

DOI:https://doi.org/10.1109/3.29305· OSTI ID:5733766

Lee, S J; Ramaswamy, R V; Figueroa, L

A new semiconductor laser design, the leaky-guided channeled substrate planar (LCSP) structure, is presented. The structure with a buffer layer in the region outside the channel provides a built-in negative effective index step. The transverse mode is well damped in the buffer layer and the substrate radiation in the region outside the channel is virtually eliminated., As a result, the significant heating and facet degradation in the region outside the channel that is related to the substrate radiation in conventional CSP channel lasers is minimized. The authors' calculated local temperature rise in the region outside the channel of the CSP laser is about 45/sup 0/C for an output power level of 100 mW, and is in reasonably good agreement with previous experimental results. The analysis by using the complex domain effective index method shows that the LCSP structure provides better lateral model discrimination than either gain guided or positive index step structures. The LCSP structure with reduced heating and strong lateral coupling effect may be useful for high power linear array lasers.

• Research Organization: Florida Univ., Gainesville, FL (USA). Dept. of Electrical Engineering; Boeing Electronics High Technology Center, Seattle, WA (US)
• OSTI ID: 5733766
• Journal Information: IEEE J. Quant. Electron.; (United States), Journal Name: IEEE J. Quant. Electron.; (United States) Vol. 25:7; ISSN IEJQA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
CALCULATION METHODS
COUPLING
DESIGN
ELECTROMAGNETIC RADIATION
LASER RADIATION
LASERS
MODE SELECTION
RADIATIONS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS
SOLID STATE LASERS