Wide-bandwidth Tm-based amplifier for laser acceleration driver

Drew A. Copeland; John Vetrovec; Amardeep S. Litt

doi:10.1117/12.2220010

22 April 2016 Wide-bandwidth Tm-based amplifier for laser acceleration driver

Drew A. Copeland, John Vetrovec, Amardeep S. Litt

Proceedings Volume 9729, High Energy/Average Power Lasers and Intense Beam Applications IX; 97290I (2016) https://doi.org/10.1117/12.2220010
Event: SPIE LASE, 2016, San Francisco, California, United States

Abstract

We report on an investigation of novel 2 μm thulium (Tm)-based laser accelerator driver (LAD) offering efficient generation of high-energy pulses with high-peak power at high pulse repetition rate (PRF), high efficiency, and with near-diffraction-limited beam quality (BQ). Laser acceleration of electrons by ultrashortpulse laser-generated plasmas offers accelerators of much reduced size and cost compared to conventional accelerators of the same energy, thus replacing the traditional mammoth-size and costly accelerator research facilities with room-size systems¹. A LAD operating at 2 μm wavelength offers ponderomotive forces four times that of 1 μm wavelength and six times that of a traditional 0.8 μm wavelength LAD. In addition, the Tm bandwidth of nearly 400 nm offers > 15% tunability and generation of ultrashort pulses down to <30 fs. The “2-for- 1” pump quantum efficiency of the Tm ion enables > 20% wall-plug efficiency. This work presents a preliminary analysis of Tm-based LAD configurations.

Citation Download Citation

Drew A. Copeland, John Vetrovec, and Amardeep S. Litt "Wide-bandwidth Tm-based amplifier for laser acceleration driver", Proc. SPIE 9729, High Energy/Average Power Lasers and Intense Beam Applications IX, 97290I (22 April 2016); https://doi.org/10.1117/12.2220010

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