Measurement of linewidth broadening factor in gain-switched InGaAsP injection lasers by CHP method

10 October 1985

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 21 (21) , 981-982
https://doi.org/10.1049/el:19850694

Abstract

First measurements of the semiconductor laser linewidth broadening factor α using a recently proposed CHP (chirp-halfwidth product) method are reported. Gain-switched optical pulses have been generated by sinusoidal RF and comb generator drive. The simultaneous recording of streak-camera and monochromator traces provides the required data for determination of α. The values of α between 6 and 7.5 are obtained for a 1.3 μm mesa laser. Computer simulations predict that the CHP formula should provide an estimate of α within ±15% for either comb generator or hard sinusoidal drive.

Keywords

GAIN SWITCHED OPTICAL PULSES
1.3 MICRON WAVELENGTH
CHP METHOD
COMPUTER SIMULATION
LASER VARIABLES MEASUREMENT
CHIRP-HALFWIDTH PRODUCT
1 GHZ LASER MODULATION
MONOCHROMATOR TRACES
MESA LASER
III-V SEMICONDUCTORS
INGAASP INJECTION LASERS
LINEWIDTH BROADENING FACTOR
COMB GENERATOR DRIVE
SEMICONDUCTOR LASER
SINUSOIDAL RF

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