Coupled simulation of chemical lasers based on intracavity partially coherent light model and 3D CFD model

Wu, Kenan; Huai, Ying; Jia, Shuqin; Jin, Yuqi

doi:10.1364/oe.19.026295

Cited by 6 publications

(6 citation statements)

References 30 publications

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“…In addition, a random noisy input field is necessary when apply this iterative propagation method to stable resonators with high Fresnel numbers [ 12 , 13 ]. Assuming the amplitude of a input field is u 0 ( x, y ), the random noise is added in following form:

where rand ( x, y ) is a random number in the range 0–1 generated by computer programs, u 0 ( x, y ) is the initial field produced by spontaneous radiation of excited atomic iodine.…”

Section: Methodsmentioning

confidence: 99%

Numerical simulation of the magnetically gain-switched chemical oxygen-iodine laser

Liu

Wang

et al. 2022

Heliyon

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where rand ( x, y ) is a random number in the range 0–1 generated by computer programs, u 0 ( x, y ) is the initial field produced by spontaneous radiation of excited atomic iodine.…”

Section: Methodsmentioning

confidence: 99%

Numerical simulation of the magnetically gain-switched chemical oxygen-iodine laser

Liu

Wang

et al. 2022

Heliyon

Self Cite

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“…The results [11,12] do not show any mixing and nozzle tail flow effect imprints on the flow or optical fields as seen in [8,9] ; perhaps the grid is not fine enough to resolve them.…”

Section: Introductionmentioning

confidence: 99%

“…Although these studies have shown reasonable comparisons with measured gain, power and dissociation data [7][8][9][10][11][12] , they have provided incomplete insight into some of the fluid dynamic effects within COIL flow fields.…”

Section: Introductionmentioning

confidence: 99%

“…Wu et al . [11,12] studied the flow and optical fields of a supersonic COIL by coupling the three-dimensional Navier–Stokes equations and the paraxial wave equation together within the whole laser cavity. The results [11,12] do not show any mixing and nozzle tail flow effect imprints on the flow or optical fields as seen in [8,9] ; perhaps the grid is not fine enough to resolve them.…”

Section: Introductionmentioning

confidence: 99%

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The proposal and realization on more exact modeling of COIL performance

Shu

et al. 2013

High Pow Laser Sci Eng

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The chemical oxygen-iodine laser (COIL) is the shortest-wavelength high-power chemical laser that has been demonstrated. The characteristics, such as good atmospheric propagation, short wavelength and excellent transmission through optical fibers, make the COIL a good candidate for high-power laser application. To model the complete COIL lasing interaction, a three-dimensional formulation of the fluid dynamics, species continuity and radiation transport equations is necessary. The computational effort to calculate the flow field over the entire nozzle bank with a grid fine enough to resolve the injection holes is so large as to preclude doing the calculation. The approach to modeling chemical lasers then has been to reduce the complexity of the model to correspond to the available computational capability, adding details as computing power increased. The modeling of lasing in the COIL medium is proposed, which is coupling with the effects induced by transverse injection of secondary gases, non-equilibrium chemical reactions, nozzle tail flow and boundary layer. The coupled steady solutions of the fluid dynamics and optics in a COIL complex three-dimensional cavity flow field are obtained following the proposal. The modeling results show that these effects have some influence on the lasing properties. A feasible methodology and a theoretical tool are offered to predict the beam quality for large-scale COIL devices.

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“…The characteristics, such as good atmospheric propagation, short wavelength and excellent transmission through optical fibers, make the COIL a good candidate for high power laser application. Simulations [3][4][5][6] of chemical lasers such as COIL are of timely interest due to the need to understand the physics underlying the COIL so that its performance may be optimized.…”

Section: Introductionmentioning

confidence: 99%

More exact modeling of COIL laser performance

Shu

et al. 2012

SPIE Proceedings

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The chemical oxygen-iodine laser (COIL) is the shortest wavelength and high-power chemical laser demonstrated. To model the complete COIL lasing interaction, a three-dimensional formulation of the fluid dynamics, species continuity and radiation transport equations is necessary. The computational effort to calculate the flow field over the entire nozzle bank with a grid fine enough to resolve the injection holes is so large as to preclude doing the calculation. The approach to modeling chemical lasers then has been to reduce the complexity of the model to correspond to the available computational capability, adding details as computing power increased. The modeling of lasing in COIL is proposed, which is coupling with the effects induced by transverse injection of secondary gases, non-equilibrium chemical reactions, nozzle tail flow and boundary layer. The coupled steady solutions of the fluid dynamics and optics in a COIL complex three dimensional cavity flow field are obtained following the proposal. The modeling results show that these effects have some influence on the lasing properties. A feasible methodology and a theoretical tool are offered to predict the beam quality for the large scale COIL devices.

show abstract

Coupled simulation of chemical lasers based on intracavity partially coherent light model and 3D CFD model

Cited by 6 publications

References 30 publications

Numerical simulation of the magnetically gain-switched chemical oxygen-iodine laser

Numerical simulation of the magnetically gain-switched chemical oxygen-iodine laser

The proposal and realization on more exact modeling of COIL performance

More exact modeling of COIL laser performance

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