Measurements of gain and absorption saturation in an electron-beam-pumped KrF amplifier

Thompson, David C.; Fedosejevs, R.; Offenberger, A. A.; Santiago, J.; Manjunath, H. R.

doi:10.1109/3.35731

Cited by 14 publications

(3 citation statements)

References 19 publications

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“…Equation (18) is compared to experimental results in figure 5. The data of Klimek et al (1981), Thompson et al (1989), and Edwards et al (1981) where chosen to cover a wide range of pump rates, and the agreement between the formalism of this work and the data gives confidence that this approach can be used to predict the performance of both low and high pump rate KrF amplifiers. This split between saturable and nonsaturable absorption is based on the findings of Thompson et al (1989).…”

Section: (14)mentioning

confidence: 66%

“…Thompson et al (1989) performed a survey of absorption data for KrF mixtures that reveals significant variation in the data. Thompson et al (1989) performed a survey of absorption data for KrF mixtures that reveals significant variation in the data.…”

Section: (14)mentioning

confidence: 99%

“…The resulting expression for the nonsaturable absorption is a = go 12.5 + 4.505 X 10-4 P F2 (18) where P? This split between saturable and nonsaturable absorption is based on the findings of Thompson et al (1989). Equation (18) is compared to experimental results in figure 5.…”

Section: (14)mentioning

confidence: 99%

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Simplified model for designing large KrF amplifiers

Sullivan

1993

Laser Part. Beams

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A simplified model for determining the performance of large krypton-fluoride laser amplifiers is presented. The model includes a straightforward treatment of the controlling kinetics, an exact solution for energy extraction, and an approximation to amplified spontaneous emission losses; it can be easily programmed to run on personal computers. The inclusion of the controlling basic physics for KrF lasers makes the model ideally suited for the many calculations that are necessary to optimize the design of a specific amplifier. The basic parameters determined in the model are compared to experimental data wherever possible, and the large amplifier performance predictions are compared to the results from the most sophisticated kinetics and a 3-D extraction model that includes a full treatment of losses due to amplified spontaneous emission.

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Section: (14)mentioning

confidence: 66%

Section: (14)mentioning

confidence: 99%

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Simplified model for designing large KrF amplifiers

Sullivan

1993

Laser Part. Beams

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Rate equations for modelling of short-pulse rare-gas halide excimer lasers

Badziak

1996

Optical and Quantum Electronics

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In this work, on the basis of the analysis of data relating to relaxation processes and emission spectra of excimer molecules, the rate equations for modelling short-pulse rare-gas halide excimer lasers are formulated and discussed. The equations take into account relaxation processes important for short-pulse generation, such as decay of B-, C-and X-states, vibrational relaxation in these states, and B-C mixing. As a special case for these equations, simplified equations for KrF and XeCI lasers are introduced. The gain recovery curves and the dependences of saturation energy on pulse duration, computed both for KrF and XeCI, coincide well with the experimental data. Discussion of the factors influencing the gain dynamics and the saturation energy of these media, is also presented.

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KrF amplifier design issues and application to inertial confinement fusion system design

et al. 1993

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Los Alamos National Laboratory has assembled an array of experimental and theoretical tools to optimize amplifier design for future single-pulse KrF lasers. The next opportunity to exercise these tools is with the design of the second-generation NIKE system under construction at the Naval Research Laboratory with the collaboration of Los Alamos National Laboratory. Major issues include laser physics (energy extraction in large modules with amplified spontaneous emission) and diode performance and efficiency. Low cost is increasingly important for larger future KrF single-pulse systems (low cost and high efficiency is important for larger repetitively pulsed applications such as electric power production). In this article, we present our approach to amplifier scaling and discuss the more important design considerations for large single-pulse KrF amplifiers. We point out where improvements in the fundamental database for KrF amplifiers could lead to increased confidence in performance predictions for large amplifiers and address the currently unresolved issues of anomalous absorption near line center and the possibility of diode instabilities for lowimpedance designs. Los Alamos has applied these amplifier design tools to the conceptual design of a 100-kJ Laser Target Test Facility and a 3-MJ Laboratory Microfusion Facility.

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Measurements of gain and absorption saturation in an electron-beam-pumped KrF amplifier

Cited by 14 publications

References 19 publications

Simplified model for designing large KrF amplifiers

Simplified model for designing large KrF amplifiers

Rate equations for modelling of short-pulse rare-gas halide excimer lasers

KrF amplifier design issues and application to inertial confinement fusion system design

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