Dispersion of the group velocity refractive index in GaAs double heterostructure lasers

Journal Article · Tue Feb 01 00:00:00 EST 1983 · IEEE J. Quant. Electron.; (United States)

DOI:https://doi.org/10.1109/JQE.1983.1071836· OSTI ID:5781108

Van der Ziel, J P; Logan, R A

The dispersion of the refractive index corresponding to the group velocity N/sub 1/ has been measured as a function of wavelength. It is obtained from the longitudinal mode spacing of GaAs buried heterostructure lasers at threshold. The dependence of n/sub 1/ on wavelength contains an approximately constant term due to the refractive index n/sub 1/ and a strongly dispersive component due to -lambda(n/sub 1//lambda). For a given spectral bandwidth, the dispersion of n/sub 1/ causes a temporal broadening of a pulse as it passes through the medium. This dispersive effect is shown to contribute to the width of 0.65 ps long pulses obtained recently from mode locked semiconductor lasers. By reducing the length of the laser, the dispersive effect is reduced and it is suggested that pulses as short as 10/sup -13/s should be obtainable from such mode locked semiconductor lasers.

• Research Organization: Bell Labs, Murray Hill, NJ 07974
• OSTI ID: 5781108
• Journal Information: IEEE J. Quant. Electron.; (United States), Vol. 29:2
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
SEMICONDUCTOR LASERS
HETEROJUNCTIONS
OPTICAL DISPERSION
REFRACTIVITY
GALLIUM ARSENIDES
MODE LOCKING
PULSE SHAPERS
VELOCITY
WAVELENGTHS
ARSENIC COMPOUNDS
ARSENIDES
ELECTRONIC CIRCUITS
GALLIUM COMPOUNDS
JUNCTIONS
LASERS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
PNICTIDES
PULSE CIRCUITS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR JUNCTIONS
420300* - Engineering- Lasers- (-1989)