Stabilization of high-power copper vapour laser

Gabay, S.; Blau, Pinhas; Lando, Mordechai; Druckman, I.; Horvitz, Zvi; Yfrah, Y.; Hen, Isaac; Miron, E.; Smilanski, I.

doi:10.1007/bf00619644

Cited by 20 publications

(4 citation statements)

References 5 publications

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“…The fibrous alumina insulator is attributed as the main source of the observed water vapour † and short chain hydrocarbon impurities [2,4]. The fact that the hydrocarbons are only detectable at elevated temperatures implies that they are more tightly bound to the insulator substrate than water.…”

Section: Discussionmentioning

confidence: 99%

“…Smilanski et al [3] reported detecting small quantities of Na, Mg, Cu and K in the discharge of an operating CVL, and correlated their presence to reductions in the total output power of the laser. Gabay et al [4] used mass spectrometry to identify the alumina insulator and ceramics used in CVL construction as the major source of atmospheric impurities in a CVL discharge tube and noted that these impurities increase the impedance of the plasma tube and disrupt the uniformity of the copper distribution.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of the evolution of trace impurities from a newly constructed copper vapour laser

Withford

Brown

Piper

1996

J. Phys. D: Appl. Phys.

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We have identified numerous molecular and atomic impurities evolving from the alumina ceramics used in the construction of copper vapour laser (CVL) plasma tubes during the high temperatures associated with typical operating conditions. The majority of these molecular impurities fragments under discharge conditions, with most of the by-products of dissociation contributing to the formation of solid deposits within the plasma tube while hydrogen-bearing molecules produce free or H which can improve CVL output power. Implications for plasma tube design and processing are discussed.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation of the evolution of trace impurities from a newly constructed copper vapour laser

Withford

Brown

Piper

1996

J. Phys. D: Appl. Phys.

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“…-Time variation of the excitation should be as swift as possible -The lasing medium should be as clean [8] &homogeneous in species and temperature as possible, For the 400W performance, the ratio optical power to deposited power is 1.7. For the ICL 100 the wall plug efficiency is 0.8.…”

Section: Copper Vapor Laser Physics Review [3]mentioning

confidence: 99%

Copper vapor laser place in the laser isotope separation program

Lemaire

Maury

1994

J. Phys. IV France

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The French uranium enrichment program, SILVA ( Si5paration Isotopique par Laser de la Vapeur Atomique d'uranium), has chosen yet the Copper Vapor Laser (CVL) for dye laser pumping. CVL is the most efficient laser in the visible, for pulsed operation, and with a high repetition rate. Over 400W of average optical power is achived from one unit; work is done under CEA/CILAS contract. A 120W laser, the ICL 100 is available on the market from CEA/CILAS. MTBF over 1000 h is specified. In MOPA (Master oscillator power amplifier) configuration, hundred of hours at nearly 600W level is obtained in the CEA facilities. Other CVL industrial applications like hole drilling or paint removing are considered.

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“…Since they were first produced in 1966, copper-vapor lasers (CVLs) have undergone several improvements in performance through the use of self-heated systems, 1 advanced excitation circuitry, 2 and buffer-gas additives. 3,4 The additives have been highly successful in elevating the output power of CVLs to values that previously had been obtained only from much larger devices.…”

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confidence: 99%

Compact and efficient kinetically enhanced copper-vapor lasers of high (100-W) average power

Mildren

Piper

2003

Opt. Lett.

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We report on severalfold increases in the output power of kinetically enhanced copper-vapor lasers operating in a regime of high specific input power and reduced tube insulation. Three laser tubes, of length 1 m and bore diameters 17.5, 25, and 32 mm, were investigated at constant input power. Output power of 104 W at 1.4% wall-plug efficiency was obtained for the largest tube. When the bore diameter was decreased to 17.5 mm, the output power and efficiency remained high (90 W at 1.0% efficiency), whereas the specific output power increased threefold. The output powers were as much as fivefold higher than those of previous small-scale (i.e., <25-mm-diameter) copper lasers of any type.

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Stabilization of high-power copper vapour laser

Cited by 20 publications

References 5 publications

Investigation of the evolution of trace impurities from a newly constructed copper vapour laser

Investigation of the evolution of trace impurities from a newly constructed copper vapour laser

Copper vapor laser place in the laser isotope separation program

Compact and efficient kinetically enhanced copper-vapor lasers of high (100-W) average power

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