Energy deposition into a collisional gas from optical lattices formed in an optical cavity

T. C. Lilly, S. F. Gimelshein, A. D. Ketsdever, M. N. Shneider

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations


The DSMC method was used to investigate the interaction between a test gas and ten successive, pulsed, optical lattices. The one-dimensional lattices were formed by two 100 ps, 393 mJ, 532 nm, simulated laser pulses and assumed to be far from resonance. The maximum centerline temperature was simulated as a function of the intervening time between pulses. An optimum intervening time was found and related to the mean collision time and available energy modes. Subsequent pulses can act to cool the gas for intervening times near zero. For long intervening times, thermal diffusion carries energy away from the centerline, reducing the maximum temperature. At one atmosphere the optimal intervening time was found to be 0.7, 1.0 and 0.25 ns for argon, nitrogen, and methane respectively. The highest temperature simulated for nitrogen was 2480 K after 50 pulses with an optimal intervening time. The combination of small intervening time and high intensity requires the use of an optical cavity for successive laser pulses as commercially available high repetition rate lasers have neither the repetition rate nor the energy per pulse.

Original languageEnglish (US)
Pages (from-to)533-538
Number of pages6
JournalAIP Conference Proceedings
StatePublished - 2009
Event26th International Symposium on Rarefied Gas Dynamics, RGD26 - Kyoto, Japan
Duration: Jul 20 2008Jul 25 2008

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


  • Direct simulation monte carlo
  • Laser-gas interaction
  • Non-equilibrium flow
  • Optical lattice


Dive into the research topics of 'Energy deposition into a collisional gas from optical lattices formed in an optical cavity'. Together they form a unique fingerprint.

Cite this