Laser induced medium perturbation in a pulsed CO2 laser

Roper, V. G.; Lamberton, H. M.; Parcell, E. W.; Manley, A.W.J.

doi:10.1016/0030-4018(78)90314-0

Cited by 31 publications

(7 citation statements)

References 3 publications

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“…Results have been obtained to correspond with the experimental work of Roper et al (1978). A 1 metre length laser cavity containing a COz:Nz:He= 3: 10: 10 mixture at atmospheric pressure and initial temperature 300 K is pumped by a 30 ps pulse of electrons providing 200 J 1-1 at 3 kV cm-l.…”

Section: Numerical Resultsmentioning

confidence: 83%

“…The heating in the lasing and non-lasing regions is predicted from our CO2 laser kinetics code, TLASER, which has been described by Davies et al(l975). The predicted phase distortion in the wavefront on exit from a stable resonator is compared with the results of experimental work of Roper et al (1978). For the case of an unstable resonator we illustrate how the predicted phase distortion can lead to degradation of the far-field output beam.…”

Section: Introductionmentioning

confidence: 94%

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Instabilities and chaos in a bistable thin layer of two-level atoms

Logvin¹,

Samson²,

Turovets³

1990

Sov. J. Quantum Electron.

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The quality of the output beam from a CO2 electron beam laser may be seriously affected by density perturbations within the laser cavity. For the first time in open literature publications, results are given from numerical modelling which indicate that the heating differential between lasing and non-lasing regimes is sufficient to account for these density perturbations. Our numerical results are in good agreement with results from experiment for the case of the stable resonator. We have extended our model to predict the degradation of the output beam from an unstable resonator.

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Section: Numerical Resultsmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 94%

Instabilities and chaos in a bistable thin layer of two-level atoms

Logvin¹,

Samson²,

Turovets³

1990

Sov. J. Quantum Electron.

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Section: Introductionmentioning

confidence: 92%

Numerical predictions of phase distortions due to a heating differential in a CO₂laser discharge tube

Roberts

Lamberton

1980

J. Phys. D: Appl. Phys.

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The quality of the output beam from a CO2 electron beam laser may be seriously affected by density perturbations within the laser cavity. Results are given from numerical modelling which indicate that the heating differential between lasing and non-lasing regimes is sufficient to account for these density perturbations. The authors' numerical results are in good agreement with results from experiment for the case of the stable resonator. They have extended their model to predict the degradation of the output beam from an unstable resonator.

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“…Related analytical work led to fundamentally new understanding of the adverse impact of LIMP phenomena and the manner in which it degraded transverse mode output quality. The effect was identified using time-resolved interferometry of the lasing/nonlasing boundaries in the gas discharge medium [461,462] . A recirculating version of the VX543 device, designated 'REP3', illustrated in SERL Figure 88, was capable of producing 600 J pulsed outputs at a repetition rate of 66 Hz.…”

Section: Uk Government Defence Establishmentsmentioning

confidence: 99%

A history of high-power laser research and development in the United Kingdom

Danson

White

Barr

et al. 2021

High Pow Laser Sci Eng

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The first demonstration of laser action in ruby was made in 1960 by T. H. Maiman of Hughes Research Laboratories, USA. Many laboratories worldwide began the search for lasers using different materials, operating at different wavelengths. In the UK, academia, industry and the central laboratories took up the challenge from the earliest days to develop these systems for a broad range of applications. This historical review looks at the contribution the UK has made to the advancement of the technology, the development of systems and components and their exploitation over the last 60 years.

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Laser induced medium perturbation in a pulsed CO2 laser

Cited by 31 publications

References 3 publications

Instabilities and chaos in a bistable thin layer of two-level atoms

Instabilities and chaos in a bistable thin layer of two-level atoms

Numerical predictions of phase distortions due to a heating differential in a CO₂laser discharge tube

A history of high-power laser research and development in the United Kingdom

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Laser induced medium perturbation in a pulsed CO2 laser

Cited by 31 publications

References 3 publications

Instabilities and chaos in a bistable thin layer of two-level atoms

Instabilities and chaos in a bistable thin layer of two-level atoms

Numerical predictions of phase distortions due to a heating differential in a CO2laser discharge tube

A history of high-power laser research and development in the United Kingdom

Contact Info

Product

Resources

About

Numerical predictions of phase distortions due to a heating differential in a CO₂laser discharge tube