Substructure of high-power stimulated emission pulses from a fiber laser

Journal Article · Sun Apr 01 04:00:00 EST 1979 · Sov. J. Quant. Electron. (Engl. Transl.); (United States)

DOI:https://doi.org/10.1070/QE1979v009n04ABEH008929· OSTI ID:5886667

Gvatua, S S; Katselashvili, Z V; Khanevichev, V A; Khotelashvili, D K; Chagulov, V S

It is demonstrated experimentally that an individual spike in a regular series of intensity pulsations from a glass-fiber laser having a core doped with neodymium ions consists of a train of short pulses having a duration of 2--8 nsec and a period of approx.15 nsec. The spectrum of stimulated emission from a fiber laser with a total half-width ..delta..lambda< or approx. =1.8--5.6 nm, governed by the pump energy, takes the form of discrete narrow lines with the half-width ..delta..lambda< or =0.075--0.3 A. This character of the stimulated emission is attributed to the self-mode-locking in a fiber laser due to the effect, at the emission wavelength of lambda=1.06 ..mu.., of short-lived color centers which are produced in the glass by the ultraviolet part of the pump radiation spectrum.

• Research Organization: Institute of Cybernetics, Academy of Sciences of the Georgian SSR, Tbilisi
• OSTI ID: 5886667
• Journal Information: Sov. J. Quant. Electron. (Engl. Transl.); (United States), Journal Name: Sov. J. Quant. Electron. (Engl. Transl.); (United States) Vol. 9:4; ISSN SJQEA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
COLOR CENTERS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
EMISSION SPECTRA
FIBERS
LASERS
MODE LOCKING
NEODYMIUM LASERS
POINT DEFECTS
PULSES
SOLID STATE LASERS
SPECTRA
TIME DEPENDENCE
VACANCIES