1.3- mu m Nd:YAG crystal fiber amplifiers

Author

Davis, G.M. ; Yokohama, I. ; Sudo, S. ; Kubodera, K.

Author_Institution

NTT Opto-electron. Lab., Kanagawa, Japan

Volume

3

Issue

5

fYear

1991

fDate

5/1/1991 12:00:00 AM

Firstpage

459

Lastpage

461

Abstract

Using unclad Nd:YAG crystal fibers of 10-40 mu m diameter and 1 cm long, and a laser diode pumping power of 83 mW at a wavelength of 0.81 mu m, gains of up to 6.5 dB at 1.32 mu m have been observed. No significant dependence of gain on signal polarization or output signal level between -43 and -5.4 dBm was observed for a 16 mu m diameter fiber. For smaller diameter fibers and a reduction of the competition from amplified spontaneous emission (ASE) at 1.064 mu m, much higher gains are expected. Extrapolation of experimental and theoretical results predicts gains in excess of approximately 30 dB for fiber diameters of 5 mu m.<>

Keywords

fibre lasers; light polarisation; neodymium; optical pumping; superradiance; 0.81 micron; 1.064 micron; 1.32 micron; 10 to 40 micron; 6.5 dB; 83 mW; Nd:YAG crystal fiber amplifiers; YAG:Nd; YAl5O12:Nd; amplified spontaneous emission; laser diode pumping power; output signal level; signal polarization; Diode lasers; Equations; Fluorescence; Laser beams; Laser excitation; Light scattering; Optical beam splitting; Optical fiber amplifiers; Optical fiber polarization; Optical fiber theory;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.93878

Filename

93878