A highly efficient, 10-J output signal amplifier for ultra-intense all-OPCPA systems

Journal Article · Fri Mar 05 00:00:00 EST 2021 · Proceedings of SPIE - The International Society for Optical Engineering

DOI:https://doi.org/10.1117/12.2578059· OSTI ID:1771277

Begishev, Ildar A. ^[1]; Bahk, Seung-Whan ^[2]; Dorrer, Christophe ^[2]; Feng, Chengyong ^[2]; Guardalben, Mark J. ^[2]; Jeon, Cheonha ^[2]; Roides, Richard G. ^[2]; Spilatro, Michael ^[2]; Webb, Benjamin ^[2]; Weiner, David ^[2]; Zuegel, Jonathan D. ^[2]; Bromage, Jake ^[2]

---

1. Univ. of Rochester, NY (United States). Lab. for Laser Energetics; Laboratory for Laser Energetics, University of Rochester
2. Univ. of Rochester, NY (United States). Lab. for Laser Energetics

Optical parametric chirped-pulse amplification (OPCPA) using high-energy Nd:glass lasers has the potential to produce ultra-intense pulses (>10²³ W/cm²). We report on the performance of the final high-efficiency amplifier in an OPCPA system based on large-aperture (63 x 63-mm²) partially deuterated potassium dihydrogen phosphate (DKDP) crystals. Here, the seed beam (170 nm, 240 mJ) was provided by the preceding OPCPA stages. The maximum pump-to-signal conversion efficiency of 37% was achieved with a 52-mm-long DKDP crystal and 40-J pump energy at 527 nm due to the flattop super-Gaussian pump beam profile and flat-in-time pulse shape. The 11.8-J output signal was compressed to 19 fs.

• Research Organization: Univ. of Rochester, NY (United States). Lab. for Laser Energetics
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• Grant/Contract Number: NA0003856
• OSTI ID: 1771277
• Journal Information: Proceedings of SPIE - The International Society for Optical Engineering, Journal Name: Proceedings of SPIE - The International Society for Optical Engineering Vol. 11666; ISSN 0277-786X
• Publisher: SPIE
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
crystals
glasses
laser glasses
neodymium
neodymium glass lasers
neodymium lasers
optical amplifiers
potassium
semiconductor lasers