High-energy large-aperture Ti:sapphire amplifier for 5 PW laser pulses

Abstract

We report on the generation of 192.3 J centered at 800 nm wavelength from a chirped-pulse amplification (CPA) Ti:sapphire laser system. The experimental results demonstrate that parasitic lasing can be suppressed successfully in the final amplifier based on a Ti:sapphire crystal of 150 mm in diameter. An over 50% pump-to-signal conversion efficiency was measured for the final amplifier by optimizing the time delay of two pump pulses and enhancing the injected seed energy. With 72% compressor throughput efficiency and 27 fs long compressed pulse duration obtained at a lower energy level, this laser could potentially support a compressed laser pulse of 5.13 PW peak power. The experimental results represent notable progress regarding the CPA laser.

Generation of High-Intensity Laser Pulses and their Applications

“…In 1999, the first CPA PW laser has been demonstrated using a Ti:sapphire/Nd:glass hybrid system [13]. Almost a decade later, 30 fs 1 PW laser operating at 0.1 Hz repetition rate was developed [14] and more recently an amplifier for 5 PW laser system has been successfully demonstrated [15]. Now, fs and 10 PW laser systems are under construction through the European Extreme Light Infrastructure (ELI) program.…”

Frontiers in ultrafast optics and ultra-intense laser technology

“…利用飞秒 OPA 输出的信号光与闲频光之间的差频, 也能产生中红外激光脉冲, 并且波长更长, 但由于其级联特 征, 总体效率不高. OPCPA 是 CPA 与 OPA 两种技术的结合, 既有 CPA 的脉冲展宽、放大、再压缩 的基本要素及高的能量提取效率, 又具备 OPA 宽带, 高增益和高信噪比的优点 [86] . 上海交通大学钱 列加小组采用该技术在 3.3∼3.95 µm 波段获得了能量为 13.3 mJ 的中红外脉冲, 输出的峰值功率大 于 120 GW [87] .…”

Linear angular dispersion compensation of cleaned self-diffraction light with a single prism

“…Peta watt (PW) level laser systems, with focused laser peak intensity of about 10 22 W/cm 2 or even higher, have been reported repeatedly [1][2][3][4][5][6] . These extremely high intensity conditions have aroused new interest in exploring lasermatter interactions, such as particle acceleration, bright X-ray source generation, and inertial confinement fusion [7,8] .…”