Journal
REVIEW OF SCIENTIFIC INSTRUMENTS
Volume 92, Issue 3, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/5.0042877
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Funding
- Department of Energy, the National Nuclear Security Administration [DE-NA0003856]
- University of Rochester
- New York State Energy Research and Development Authority
- agency of the U.S. Government
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The P9TBD is a transmission beam diagnostic system developed for studying laser-plasma interactions, providing measurements of the energy, power, fluence, polarization, and spectrum of the transmitted beam. It enables direct observation of various cross-beam energy transfer phenomena such as wavelength detuning, polarization effects, and gain saturation.
A transmitted-beam diagnostic (P9TBD) was developed as part of a new experimental platform used to study laser-plasma interactions on OMEGA. Located in the opposing port to the wavelength-tunable (350 nm to 353 nm) UV drive beam, the P9TBD characterizes the beam after it propagates through an undersense plasma. The instrument consists of a large-aperture window that allows light to exit the target chamber and project onto a thin sheet of semi-transparent diffuser material. Light transmitted through the diffuser is recorded using a time-integrated camera and a fiber-optically coupled streaked spectrometer, providing measurements of the energy, power, fluence, polarization, and spectrum of the transmitted beam. The diagnostic enables direct observation of a variety of cross-beam energy transfer phenomena, such as wavelength detuning, polarization effects, and gain saturation.
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