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Titolo:
Design considerations and scaling laws for high power convective cooled CWCO2 lasers
Autore:
Nath, AK; Golubev, VS;
Indirizzi:
Ctr Adv Technol, Indore 452013, India Ctr Adv Technol Indore India 452013 tr Adv Technol, Indore 452013, India Sci Res Ctr Technol Lasers, Shatura, Moscow Region, Russia Sci Res Ctr Technol Lasers Shatura Moscow Region Russia w Region, Russia
Titolo Testata:
PRAMANA-JOURNAL OF PHYSICS
fascicolo: 3-4, volume: 51, anno: 1998,
pagine: 463 - 479
SICI:
0304-4289(199809/10)51:3-4<463:DCASLF>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
CO2-LASER; DISCHARGE;
Keywords:
CO2 laser; convective cooled; design criteria; scaling laws;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Nath, AK Ctr Adv Technol, Indore 452013, India Ctr Adv Technol Indore India 452013 chnol, Indore 452013, India
Citazione:
A.K. Nath e V.S. Golubev, "Design considerations and scaling laws for high power convective cooled CWCO2 lasers", PRAMANA-J P, 51(3-4), 1998, pp. 463-479

Abstract

Various criteria for designing high power convective cooled CO2 lasers have been discussed. Considering the saturation intensity, optical damage threshold of the optical resonator components and the small-signal gain, the scaling laws for designing high power CW CO2 lasers have been established. Intransverse flow CO2 lasers having discharge of square cross-section, the discharge length L and its width W for a specific laser power P (Watt) and gas flow velocity V (cm/s) can be given by L = 1.4 x 10(4)P(1)/V-2(-1) ems and W = 0.04P(1/2) cms. The optimum transmitivity of the output coupler is found to be almost constant (about 60%), independent of the small signal gain and laser power. In fast axial flow CO2 lasers the gas flow should be divided into several discharge tubes to maintain the flow velocity within sonic limit. The dischargelength in this type of laser does not depend explicitly on the laser power, instead it depends on the input power density in the discharge and the gas flow velocity. Various considerations for ensuring better laser beam quality are also discussed.

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Documento generato il 01/12/20 alle ore 13:40:15