Design of Fabry-Perot surface-emitting lasers with a periodic gain structure

Technical Report · Thu Jun 01 04:00:00 EDT 1989

OSTI ID:5200879

Corzine, S W; Geels, R S; Scott, J W; Yan, R H; Coldren, L A

This reprint presents a detailed analysis of a Fabry-Perot Surface-Emitting Laser (FP-SEL) which utilizes the recently proposed concept of periodic gain. By employing the periodic gain concept, close to a factor of two reduction in threshold current should be possible, the ideal reduction of a factor of two being limited by the internal loss of the cavity. Multiple quantum-well active regions are also considered and shown to provide greater than a factor of two improvement over bulk-GaAs periodic and uniform gain configurations. The effects of index perturbations within the cavity created by interleaving active and passive segments are treated for different Al mole fractions within the passive segments. The effects are found to be small for x<0.3. In addition, optical pumping results on periodic gain DBR-SEL samples which exhibit very low optical power density thresholds (<30000 W/sq cm) and narrow above-threshold linewidth (<2A) are included.

• Research Organization: California Univ., Santa Barbara, CA (USA). Dept. of Electrical and Computer Engineering
• OSTI ID: 5200879
• Report Number(s): AD-A-212349/5/XAB
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers &amp; Masers-- (1990-)
AMPLIFICATION
CURRENTS
DISTURBANCES
ELECTRIC CURRENTS
FABRY-PEROT INTERFEROMETER
GAIN
INTERFEROMETERS
LASERS
LOSSES
MEASURING INSTRUMENTS
OPTICAL PUMPING
PUMPING
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS
SOLID STATE LASERS
THRESHOLD CURRENT