Filamentation and Fundamental-Mode Operation in InGaN Quantum Well Lasers

Journal Article · Wed Dec 08 00:00:00 EST 1999 · Applied Physics Letters

OSTI ID:15164

CHOW, WENG W; AMANO, H; AKASAKI, I

Filamentation, and consequently output beam quality in InGaN quantum-well lasers are found to be strong functions of quantum-well width because of the interplay of quantum-confined Stark effect and many-body interactions. For an In{sub 0.2}Ga{sub 0.8}N/GaN gain medium the antiguiding factor in a thick 4nm quantum well is considerably smaller than that for a narrow 2nm one. As a result, lasers with the thicker quantum well maintain fundamental-mode operation with wider stripe widths and at significantly higher excitation levels.

• Research Organization: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Sandia National Lab. (SNL-CA), Livermore, CA (United States)
• Sponsoring Organization: US Department of Energy (US)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 15164
• Report Number(s): SAND99-3109J; TRN: US200221%%258
• Journal Information: Applied Physics Letters, Other Information: Submitted to Applied Physics Letters; PBD: 8 Dec 1999
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
EXCITATION
LASERS
STARK EFFECT
INDIUM NITRIDES
GALLIUM NITRIDES