Compact XeF (C → A) and iodine laser optically pumped by a surface discharge

Knecht, B.; Fraser, R. D.; Wheeler, David; Zietkiewicz, C. J.; Михеев, Л. Д.; Zuev, V. S.; Eden, J. G.

doi:10.1364/ol.20.001011

Cited by 6 publications

(5 citation statements)

References 11 publications

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“…As reported previously, 19 the dependence of laser output energy on the C 3 F 7 I partial pressure displays a rather broad maximum centered at Ϸ20 Torr. Single-pulse energies exceeding 0.7 J were measured with a calibrated pyroelectric detector, and burn patterns show the beam to be highly multimode with a nearly square cross-sectional profile.…”

Section: Iodine Laser (1315 M) Resultssupporting

confidence: 82%

“…As reported previously, 19 the XeF(C→A) output pulse energy is maximum for XeF 2 partial pressures of 1.4 to 1.5 Fig. 11 Photograph of the surface discharge system in operation.…”

Section: Xef: Gain and Laser Measurementsmentioning

confidence: 52%

“…18,19 A more detailed account of the design and operation of this system and an alternative structure for the surface discharge ignition electrodes are presented here. 18,19 A more detailed account of the design and operation of this system and an alternative structure for the surface discharge ignition electrodes are presented here.…”

Section: Introductionmentioning

confidence: 99%

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Optical pumping of the <inline-formula><math display="inline" overflow="scroll"><mi>XeF</mi><mo>(</mo><mstyle mathvariant="normal"><mtext>C</mtext></mstyle><mo>→</mo><mstyle mathvariant="normal"><mtext>A</mtext></mstyle><mo>)</mo></math></inline-formula> and iodine 1.315-μm lasers by a compact surface discharge system

et al. 2003

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Details are provided regarding the design, construction, and performance of a compact (Ϸ0.6-m 2 footprint), single-channel surface discharge system and its application to optically pumping the XeF(C →A) and iodine atomic lasers in the blue-green (Ϸ480 nm) and near infrared (1.315 m), respectively. The system has a gain (active) length of Ϸ50 cm, and triggering the discharge requires no high-voltage or high-current switches. Measurements of the velocity of the photodissociation bleaching wave and the small-signal gain of the XeF(C→A) system are described. At 488 nm, the gain coefficient ␥ was found to be Ϸ0.3% cm Ϫ1 , a value comparable to those reported previously for systems dissipating considerably higher power per unit length. Single-pulse energies Ͼ50 mJ from the XeF(C→A) laser (Ϸ485 nm) and Ͼ0.7 J on the 5p 2 P 1/2 →5p 2 P 3/2 transition of atomic iodine at 1.315 m have been obtained with nonoptimized resonator output couplings (5% and 10%, respectively). The rate of erosion of the dielectric surface has been measured to be Ϸ0.1 to 0.3 m/shot for a glass ceramic dielectric, and the performance of two electrical configurations for the ballasting pins (feedthrough and V) is compared.

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Section: Iodine Laser (1315 M) Resultssupporting

confidence: 82%

“…As reported previously, 19 the XeF(C→A) output pulse energy is maximum for XeF 2 partial pressures of 1.4 to 1.5 Fig. 11 Photograph of the surface discharge system in operation.…”

Section: Xef: Gain and Laser Measurementsmentioning

confidence: 52%

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Optical pumping of the <inline-formula><math display="inline" overflow="scroll"><mi>XeF</mi><mo>(</mo><mstyle mathvariant="normal"><mtext>C</mtext></mstyle><mo>→</mo><mstyle mathvariant="normal"><mtext>A</mtext></mstyle><mo>)</mo></math></inline-formula> and iodine 1.315-μm lasers by a compact surface discharge system

et al. 2003

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“…Lasing in the photochemically driven XeF active medium was obtained for the first time in 1977 on the B-X transition with an exploding wire as a pump source [22]. Later on, in a series of papers, laser action on XeF(B-X) and XeF(C-A) was reported upon optical pumping by broadband VUV radiation from exploding wires [20,23], surface discharges [24][25][26][27], formedferrite flash [28,29], and strong shock waves [30], as well as by the Xe 2 spontaneous emission at 172 nm excited by an electron beam [31][32][33]. These studies have led to a number of significant achievements.…”

Section: Xef(c-a) Active Mediummentioning

confidence: 99%

Multiterawatt Hybrid (Solid/Gas) Femtosecond Systems in the Visible

Михеев¹,

Лосев²

2016

High Energy and Short Pulse Lasers

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A novel hybrid (solid/gas) approach to the development of femtosecond high-intensity laser systems operating in the visible is presented in this chapter. Behind this approach is a combination of a solid-state front end relying on widespread and highly developed techniques for femtosecond pulse generation in the near infrared with a photochemically driven boosting amplifier operating in the visible spectral range. Historical background of developing photochemically pumped gas lasers on broad bandwidth electronic transitions in molecules and physical principles of their operation are briefly summarized as well. The architecture and the design issues of the hybrid femtosecond systems relying on the amplification of the second harmonic of Ti:sapphire front ends in the photodissociation XeF(C-A) power-boosting amplifiers driven by the VUV radiation from electron-beam-to-VUV-flash converters are described, as well as breakthrough results of proof-of-principle experiments demonstrating a high potential of the hybrid approach. Wavelength scaling of laser-matter interaction is shortly discussed to demonstrate advantages of shorter driver wavelengths for some applications with main emphasis placed on recombination-pumped soft X-ray lasers.

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“…Thus, a device 0.5-1 m in length with an input energy of 1-5 kJ has become an object of experimental investigations. The first experiments with a compact laser demonstrated an efficiency of about 5 9 10 -5 [8,9]. Up to now, the reason for the low efficiency is not clear.…”

Section: Introductionmentioning

confidence: 99%

State of and prospects for XeF(C−A) optically pumped lasers

et al. 1997

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Experimental and theoretical results are presented on an XeF(C-A) blue-green laser driven by 5-kJ energy. The laser was pumped by a ferrite-induced discharge of 90 cm in length. The output energy of 0.22 J was obtained with a plane-parallel resonator. A program to simulate laser operation has been developed. Numerical results for a wide range of conditions are compared with experiments performed by us and by other authors. It is found that intracavity refractive losses limit laser operation for XeF pressures above 3 torr. The laser efficiency strongly depends on the discharge-to-cavity length ratio. Possible ways to increase the laser power and efficiency are discussed.

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Compact XeF (C → A) and iodine laser optically pumped by a surface discharge

Cited by 6 publications

References 11 publications

Multiterawatt Hybrid (Solid/Gas) Femtosecond Systems in the Visible

State of and prospects for XeF(C−A) optically pumped lasers

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