CW operation of monolithic arrays of surface-emitting AlGaAS diode lasers with dry-etched vertical facets and parabolic deflecting mirrors

Journal Article · Fri Oct 01 00:00:00 EDT 1993 · IEEE Photonics Technology Letters (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/68.248409· OSTI ID:5435500

Donnelly, J P; Goodhue, W D; Wang, C A; Bailey, R J; Lincoln, G A; Johnson, G D; Missaggia, L J; Walpole, J N ^[1]

---

1. Massachusetts Inst. of Tech., Lexington, MA (United States). Lincoln Lab.

A monolithic two-dimensional array of surface-emitting AlGaAs diode lasers with dry-etched vertical facets and parabolic deflecting mirrors was mounted junction-site up on a W/Cu microchannel heatsink and evaluated under continuous-wave (CW) operating conditions. Both the facets and parabolic deflecting mirrors were etched using chlorine ion-beam-assisted etching. Threshold current densities of different sections of the array were consistently around 240 A/cm[sup 2], and measured CW differential quantum efficiencies were in the 46--48% range. CW power densities as high as 148 W/cm[sup 2] were achieved with an average temperature rise of less than 25 C in this junction-side-up configuration.

• OSTI ID: 5435500
• Journal Information: IEEE Photonics Technology Letters (Institute of Electrical and Electronics Engineers); (United States), Vol. 5:10; ISSN 1041-1135
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
SEMICONDUCTOR LASERS
PERFORMANCE
ALUMINIUM ARSENIDES
EXPERIMENTAL DATA
GALLIUM ARSENIDES
HETEROJUNCTIONS
LASER MIRRORS
ALUMINIUM COMPOUNDS
ARSENIC COMPOUNDS
ARSENIDES
DATA
GALLIUM COMPOUNDS
INFORMATION
JUNCTIONS
LASERS
MIRRORS
NUMERICAL DATA
PNICTIDES
SEMICONDUCTOR DEVICES
SEMICONDUCTOR JUNCTIONS
SOLID STATE LASERS
426002* - Engineering- Lasers & Masers- (1990-)