Calculated Methods of High Power Laser Near Field Parameters

A band-stop angular filter (BSF) based on hump volume Bragg gratings (HVBGs) is proposed. Band-stop filtering in a two-stage amplifier laser system is discussed and simulated. Simulation results show that small-scale self-focusing effects in the laser system can be effectively suppressed with the BSF due to the control of fast nonlinear growth in a specific range of spatial frequencies in the laser beam. Near-field modulation of the output beam from the laser system was decreased from 2.69 to 1.37 by controlling the fast nonlinear growth of spatial frequencies ranging from $0.6~\text{mm}^{-1}$ to $1.2~\text{mm}^{-1}$ with the BSF. In addition, the BSF can be used in a plug-and-play scheme and has potential applications in high-power laser systems.

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Calculated Methods of High Power Laser Near Field Parameters

Cited by 4 publications

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The modified SRRS threshold criteria for high peak power laser pulses in long air-path transmission considering the near-field beam quality

The modified SRRS threshold criteria for high peak power laser pulses in long air-path transmission considering the near-field beam quality

Near-field analysis of the high-power laser facility using calculated methods and a residual convolutional neural network with attention mechanism

Band-stop angular filtering with hump volume Bragg gratings

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