Spectrally Narrowed Operation of a Gain-Switched 690 nm GaInP/AlGaInP Fabry-Perot Laser by Self-Seeding Technique

Abstract

Spectrally narrowed pulses from a gain-switched 690 nm GaInP/AlGaInP Fabry-Perot laser are successfully obtained by the self-seeding technique. A commercially available laser diode emits 48 ps pulses with a spectral width of 0.10 nm or less. This scheme will provide a compact and efficient light source for generation of ultraviolet light by nonlinear optical methods such as second-harmonic generation.

Strongly asymmetric waveguide laser diodes for high brightness picosecond optical pulses generation by gain switching at GHz repetition rates

“…distributed feedback [10], distributed Bragg reflector [3], or discrete mode laser), external optical injection [22,23], self-seeding in an external resonator including a wavelength selective element such as a grating (see e.g. [22,[24][25][26] as well as [9]), or, under some conditions, even external feedback without built-in selectivity [27]. One of the advantages of the rate equation approximation used so far in the paper, apart from its simple instructive nature, is that it is generic and not concerned with the spectrum of laser emission, including, if appropriate, the method of achieving single-frequency or near single-frequency operation.…”

Spectral control of asymmetric‐waveguide large signal modulated diode lasers for non‐linear applications

“…[15, 16]) and self‐seeding (see e.g. [13, 17–19] as well as [8]) of repetitively gain‐switched lasers have been quite extensively studied both experimentally and theoretically; here, we concentrate on the potential of the lasers with a large effective spot size and discuss the physics of the operating regime only inasmuch as it is important for optimising the effective spot size or the choice of operating point.…”