DOE OSTI · 3022820
Entropy-mode-driven gas optics
Abstract
We propose a class of gaseous diffractive optical elements created by imprinting an entropy mode in a gas. Previous approaches to gaseous diffractive optics have relied on the simultaneous excitation of a standing acoustic wave and an entropy mode to produce one-dimensional periodic structures. However, the presence of acoustic oscillations in the gas imposes stringent constraints on some of the operational parameters of these optical elements, such as their lifetime and diffraction angle. Here, in this work, we introduce an approach that eliminates the acoustic mode, relying solely on the entropy mode. This enables control of the lifetime and temporal profile of gaseous optical elements, and also allows the creation of arbitrary structures with greater contrast, including nonperiodic patterns such as chirped gratings or lenses. This approach should allow operation over a wider parameter space, including larger diffraction angles and compatibility with laser pulse durations ranging from femtoseconds to microseconds.
Explore related subjects
Keep this discovery
Explore connections, maps & timelines
Michel, Pierre [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000275847420), Oudin, A. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000263856434), Rajesh, H. [Stanford University, CA (United States)] (ORCID:000900015800400X), Ou, K. [Stanford University, CA (United States)] (ORCID:0009000554040547), Chakraborty, D. [Stanford University, CA (United States)] (ORCID:0000000320002436), Cao, S. [Stanford University, CA (United States)] (ORCID:0009000185249088), Kur, E. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000218313887), Lancia, L. [Sorbonne Université, Palaiseau (France); Centre National de la Recherche Scientifique (CNRS), Palaiseau (France). Laboratoire pour l'Utilisation des Lasers Intenses (LULI); Ecole Polytechnique, Palaiseau (France); Commissariat a l'Energie Atomique (CEA), Palaiseau (France); Institut Polytechnique de Paris (IP Paris), Palaiseau (France)] (ORCID:0000000175013648), Ghosh, D. [Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)] (ORCID:0000000339102613), Riconda, C. [Sorbonne Université, Paris (France); Centre National de la Recherche Scientifique (CNRS), Paris (France). Laboratoire pour l'Utilisation des Lasers Intenses (LULI); Ecole Polytechnique, Paris (France); Commissariat a l'Energie Atomique (CEA), Paris (France)] (ORCID:0000000195890568), Wurtele, J.S. [University of California, Berkeley, CA (United States)] (ORCID:0000000184010297), Edwards, M.R. [Stanford University, CA (United States)] (ORCID:0000000297010736). 2026-02-11. Entropy-mode-driven gas optics. https://doi.org/10.1103/pnhn-w6tl
Cite the original work for its findings. Save a collection to share your selection of sources.