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Titolo:
How to launch 1 W into single-mode fiber from a single 1.48-mu m flared resonator
Autore:
Delepine, S; Gerard, F; Pinquier, A; Fillion, T; Pasquier, J; Locatelli, D; Chardon, JP; Bissessur, HK; Bouche, N; Boubal, FR; Salet, P;
Indirizzi:
Alcatel Corp, Res Ctr, OPTO, Grp Int Econ, F-91461 Marcoussis, France Alcatel Corp Marcoussis France F-91461 Econ, F-91461 Marcoussis, France
Titolo Testata:
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
fascicolo: 2, volume: 7, anno: 2001,
pagine: 111 - 123
SICI:
1077-260X(200103/04)7:2<111:HTL1WI>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
TAPERED GAIN REGIONS; HIGH-POWER; DIODE-LASER; CW OUTPUT; AMPLIFIERS;
Keywords:
absorbing media; astigmatism; ion implantation; laser resonators; optical beams; optical feedback; power semiconductor diodes;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
--discip_EC--
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Delepine, S Photonetics, BP 39, F-78160 Marly Le Roi, France Photonetics BP 39 Marly Le Roi France F-78160 Le Roi, France
Citazione:
S. Delepine et al., "How to launch 1 W into single-mode fiber from a single 1.48-mu m flared resonator", IEEE S T QU, 7(2), 2001, pp. 111-123

Abstract

The operation of 1.48-mum flared resonators is thoroughly studied, both experimentally and theoretically: the accurate determination of threshold condition as a function of geometrical and material parameters, the study of emission spectra and astigmatism variations as a function of optical power level allow us to better understand the way these devices operate. The origin of modal distortion is then analyzed, and an original solution is proposed to increase the single-transverse-mode power at high il lection level: itis shown that implanting the multiple-quantum-well active layer with protons efficiently enhances the filtering capability of the overall structure, and particularly that of the ridge waveguide, by bringing additional lateral absorption losses. The explanation of the filtering mechanism is successfully confirmed by simulations using the beam-propagation method. This technique finally allowed more than 1.3 W of continuous wave (CW) diffraction-limited power at 6 A. Low-modal-gain structures were then realized to reduce modal optical absorption in the implanted structures with a view to maintaining a high external efficiency and a reduced vertical divergence. Finally,a three-lens coupling system was designed and the effects of optical feedback minimized so as to obtain a very high coupling efficiency: with an improved laser design, 1.12 W of CW power were then coupled into single-mode fiber at 6.6 A, which represents 65% of the power emitted by the laser chip.

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Documento generato il 01/10/20 alle ore 16:07:58