Design considerations of the DBR injection laser and the waveguiding structure for integrated optics

Journal Article · Fri Apr 01 04:00:00 EST 1977 · IEEE J. Quant. Electron.; (United States)

DOI:https://doi.org/10.1109/JQE.1977.1069303· OSTI ID:5239956

Wang, S

The operation of the distributed-Bragg-reflector (DBR) injection laser with an emphasis on compatibility with the integrated optics concept is analyzed. First, methods of computing the coupling constant are reviewed and the results are compared. A general agreement is found. Next, the reflection and transmission coefficients for both lossless and lossy Bragg reflectors are examined for their dependencies on the coupling constant, the reflector length, the loss constant in the reflector region, and the operating wavelength. The computed results are then applied to analyzing experimental results on DBR GaAs double-heterostructure (DH) injection lasers. A general agreement between the theory and the experiment is found. From the analysis, it appears possible for the DBR injection laser to operate in single mode with sufficient output power, low threshold, and good efficiency by proper design of the laser structure and significant loss reduction in the reflector region. A waveguiding structure is considered for loss reduction and for eventual incorporation of the laser into an integrated optical circuit. The stress is on a single liquid-phase-epitaxy (LPE) step for the fabrication of the structure. Additional pre-LPE and post-LPE steps are suggested for fabrication and isolation of different optical devices.

• Research Organization: Univ. of California, Berkeley
• OSTI ID: 5239956
• Journal Information: IEEE J. Quant. Electron.; (United States), Journal Name: IEEE J. Quant. Electron.; (United States) Vol. QE-13:4; ISSN IEJQA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
ARSENIC COMPOUNDS
ARSENIDES
BRAGG REFLECTION
DESIGN
FABRICATION
GALLIUM ARSENIDES
GALLIUM COMPOUNDS
LASERS
PNICTIDES
REFLECTION
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS
WAVEGUIDES