Enhancement of THz generation by feedback-optimized wavefront manipulation
Abstract
Here, we apply active feedback optimization methods to pyroelectric measurements of a THz signal generated by four wave mixing in air using 1 mJ to 12 mJ, 35 fs laser pulses operating at 1/2 kHz repetition rate. A genetic algorithm, using the THz signal as a figure of merit, determines the voltage settings to a deformable mirror and results in up to a 6 fold improvement in the THz signal compared with settings optimized for the best focus. It is possible to optimize for different THz generation processes using this technique.
- Authors:
-
- Univ. of Michigan, Ann Arbor, MI (United States). Center for Ultrafast Optical Science (CUOS)
- Univ. of Electronic Science and Technology of China, Chengdu (China). School of Physical Electronics
- Publication Date:
- Research Org.:
- Univ. of Michigan, Ann Arbor, MI (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC); US Air Force Office of Scientific Research (AFOSR)
- OSTI Identifier:
- 1463884
- Grant/Contract Number:
- SC0008352; FA9550-12-1-0310
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Optics Express
- Additional Journal Information:
- Journal Volume: 25; Journal Issue: 15; Journal ID: ISSN 1094-4087
- Publisher:
- Optical Society of America (OSA)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
Citation Formats
Hah, J., Jiang, W., He, Z-H., Nees, J. A., Hou, B., Thomas, A. G. R., and Krushelnick, K. Enhancement of THz generation by feedback-optimized wavefront manipulation. United States: N. p., 2017.
Web. doi:10.1364/OE.25.017271.
Hah, J., Jiang, W., He, Z-H., Nees, J. A., Hou, B., Thomas, A. G. R., & Krushelnick, K. Enhancement of THz generation by feedback-optimized wavefront manipulation. United States. https://doi.org/10.1364/OE.25.017271
Hah, J., Jiang, W., He, Z-H., Nees, J. A., Hou, B., Thomas, A. G. R., and Krushelnick, K. Tue .
"Enhancement of THz generation by feedback-optimized wavefront manipulation". United States. https://doi.org/10.1364/OE.25.017271. https://www.osti.gov/servlets/purl/1463884.
@article{osti_1463884,
title = {Enhancement of THz generation by feedback-optimized wavefront manipulation},
author = {Hah, J. and Jiang, W. and He, Z-H. and Nees, J. A. and Hou, B. and Thomas, A. G. R. and Krushelnick, K.},
abstractNote = {Here, we apply active feedback optimization methods to pyroelectric measurements of a THz signal generated by four wave mixing in air using 1 mJ to 12 mJ, 35 fs laser pulses operating at 1/2 kHz repetition rate. A genetic algorithm, using the THz signal as a figure of merit, determines the voltage settings to a deformable mirror and results in up to a 6 fold improvement in the THz signal compared with settings optimized for the best focus. It is possible to optimize for different THz generation processes using this technique.},
doi = {10.1364/OE.25.017271},
journal = {Optics Express},
number = 15,
volume = 25,
place = {United States},
year = {Tue Jul 11 00:00:00 EDT 2017},
month = {Tue Jul 11 00:00:00 EDT 2017}
}
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