We present an innovative design for a two-head,gas-cooled multi-slab high-energy,high-repetition-rate amplifier aimed at mitigating thermally induced depolarization in a wide-bandwidth neodymium-doped glass gain mediu...We present an innovative design for a two-head,gas-cooled multi-slab high-energy,high-repetition-rate amplifier aimed at mitigating thermally induced depolarization in a wide-bandwidth neodymium-doped glass gain medium.This architecture employs two quartz rotators(QRs)with opposite-handedness,strategically positioned within each multi-slab amplifier head,to enhance depolarization compensation.Theoretical modeling of this amplifier configuration demonstrates a 20×reduction in depolarization losses for a 70 mm beam operating at the central wavelength,compared to conventional approaches that utilize a single QR positioned between the amplifier heads.In addition,for a wide bandwidth source,the integration of QRs with opposite-handedness yields a 9×improvement in depolarization losses at the spectral extremes compared to the use of two QRs exhibiting the same optical handedness in both amplifier heads.展开更多
基金the auspices of the U.S.Department of Energy by Lawrance Livermore National Laboratory under Contract DE-AC52-07NA27344funding provided by the Department of Energy Office of Fusion Energy Sciences.LLNL-JRNL-869299。
文摘We present an innovative design for a two-head,gas-cooled multi-slab high-energy,high-repetition-rate amplifier aimed at mitigating thermally induced depolarization in a wide-bandwidth neodymium-doped glass gain medium.This architecture employs two quartz rotators(QRs)with opposite-handedness,strategically positioned within each multi-slab amplifier head,to enhance depolarization compensation.Theoretical modeling of this amplifier configuration demonstrates a 20×reduction in depolarization losses for a 70 mm beam operating at the central wavelength,compared to conventional approaches that utilize a single QR positioned between the amplifier heads.In addition,for a wide bandwidth source,the integration of QRs with opposite-handedness yields a 9×improvement in depolarization losses at the spectral extremes compared to the use of two QRs exhibiting the same optical handedness in both amplifier heads.
