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Titolo:
QUANTUM-NOISE ANALYSIS OF FREQUENCY-DOUBLING RING LASERS - NONLINEARITY-INDUCED NOISE ENHANCEMENT AND ITS DEPENDENCE ON GAIN PROFILE
Autore:
MAEDA J; FUKUCHI Y; KOGOSHI S;
Indirizzi:
SCI UNIV TOKYO,FAC SCI & TECHNOL,DEPT ELECT ENGN CHIBA JAPAN
Titolo Testata:
IEEE journal of quantum electronics
fascicolo: 11, volume: 34, anno: 1998,
pagine: 2172 - 2178
SICI:
0018-9197(1998)34:11<2172:QAOFRL>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
2ND-HARMONIC GENERATION; SQUEEZED-LIGHT; FLUCTUATIONS; FIELD;
Keywords:
CW LASERS; LASER NOISE; OPTICAL FREQUENCY CONVERSION; OPTICAL PROPAGATION IN NONLINEAR MEDIA; QUANTUM THEORY; SPONTANEOUS EMISSION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
13
Recensione:
Indirizzi per estratti:
Citazione:
J. Maeda et al., "QUANTUM-NOISE ANALYSIS OF FREQUENCY-DOUBLING RING LASERS - NONLINEARITY-INDUCED NOISE ENHANCEMENT AND ITS DEPENDENCE ON GAIN PROFILE", IEEE journal of quantum electronics, 34(11), 1998, pp. 2172-2178

Abstract

Using a traveling-wave model that can treat the spatial evolution of light fields, quantum noise characteristics of frequency-doubling ringlasers are analyzed under single-frequency operation. Systems under consideration are the discrete system, in which a laser crystal and a nonlinear crystal are separately installed, and the self-doubling system, which is equipped with a nonlinear crystal with laser gain. It is predicted that the unsaturated gain profile does not affect noise characteristics of the discrete system: nonlinear loss-induced noise enhancement (NINE), i.e., an increase of the spontaneous emission noise associated with enlarged gain that compensates the nonlinear loss, manifests itself at a specific operating point regardless of the gain profile, In the self-doubling system, on the other hand, the manifestation ofNINE will arise for higher harmonic output compared with that in the discrete system. For the self-doubling system, moreover, the profile of the unsaturated gain causes a significant difference in NINE; because NINE is associated with a large held variation, it is effectively suppressed by configuring the gain profile to be flat or increasing along the direction of laser field propagation.

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Documento generato il 25/11/20 alle ore 10:21:04