TY - JOUR

T1 - Analogue Hawking temperature of a laser-driven plasma

AU - Fiedler, Cezary

AU - Burton, David

PY - 2021/7/31

Y1 - 2021/7/31

N2 - We present a method for exploring analogue Hawking radiation using a laser pulse propagating through an underdense plasma. The propagating fields in the Hawking effect are local perturbations of the plasma density and laser amplitude. We derive the dependence of the resulting Hawking temperature on the dimensionless amplitude of the laser and the behaviour of the spot area of the laser at the analogue event horizon. We demonstrate one possible way of obtaining the analogue Hawking temperature in terms of the plasma wavelength, and our analysis shows that for a high intensity near-IR laser the analogue Hawking temperature is less than approximately 25K for a reasonable choice of parameters.

AB - We present a method for exploring analogue Hawking radiation using a laser pulse propagating through an underdense plasma. The propagating fields in the Hawking effect are local perturbations of the plasma density and laser amplitude. We derive the dependence of the resulting Hawking temperature on the dimensionless amplitude of the laser and the behaviour of the spot area of the laser at the analogue event horizon. We demonstrate one possible way of obtaining the analogue Hawking temperature in terms of the plasma wavelength, and our analysis shows that for a high intensity near-IR laser the analogue Hawking temperature is less than approximately 25K for a reasonable choice of parameters.

KW - Analogue gravity

KW - Laser-plasma interactions

U2 - 10.1016/j.physleta.2021.127380

DO - 10.1016/j.physleta.2021.127380

M3 - Journal article

VL - 403

JO - Physics Letters A

JF - Physics Letters A

SN - 0375-9601

M1 - 127380

ER -