Advanced concepts for high-power short-pulse CO2 laser development

Daniel F. Gordon; Victor Hasson; Hubertus von Bergmann; Yu-hsin Chen; A. Schmitt-Sody; Joseph R. Penano

doi:10.1117/12.2223835

7 June 2016 Advanced concepts for high-power, short-pulse CO₂ laser development

Daniel F. Gordon, Victor Hasson, Hubertus von Bergmann, Yu-hsin Chen, A. Schmitt-Sody, Joseph R. Penano

Proceedings Volume 9835, Ultrafast Bandgap Photonics; 98350Z (2016) https://doi.org/10.1117/12.2223835
Event: SPIE Defense + Security, 2016, Baltimore, MD, United States

Abstract

Ultra-short pulse lasers are dominated by solid-state technology, which typically operates in the near-infrared. Efforts to extend this technology to longer wavelengths are meeting with some success, but the trend remains that longer wavelengths correlate with greatly reduced power. The carbon dioxide (CO₂) laser is capable of delivering high energy, 10 micron wavelength pulses, but the gain structure makes operating in the ultra-short pulse regime difficult. The Naval Research Laboratory and Air Force Research Laboratory are developing a novel CO₂ laser designed to deliver ~1 Joule, ~1 picosecond pulses, from a compact gain volume (~2x2x80 cm). The design is based on injection seeding an unstable resonator, in order to achieve high energy extraction efficiency, and to take advantage of power broadening. The unstable resonator is seeded by a solid state front end, pumped by a custom built titanium sapphire laser matched to the CO₂ laser bandwidth. In order to access a broader range of mid infrared wavelengths using CO₂ lasers, one must consider nonlinear frequency multiplication, which is non-trivial due to the bandwidth of the 10 micron radiation.

Citation Download Citation

Daniel F. Gordon, Victor Hasson, Hubertus von Bergmann, Yu-hsin Chen, A. Schmitt-Sody, and Joseph R. Penano "Advanced concepts for high-power, short-pulse CO₂ laser development", Proc. SPIE 9835, Ultrafast Bandgap Photonics, 98350Z (7 June 2016); https://doi.org/10.1117/12.2223835

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