ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
A FIR interferometer system for the Advanced Toroidal Facility (ATF) at Oak Ridge National Laboratory has been developed with some major modifications to previous designs used at ORNL. Due to the highly elliptical cross section of the plasma and the projected plasma densities, a 15-channel interferometer was designed to operate at 119 μ. The large number of channels necessitated the construction of a high-power FIR laser with a fundamental mode Gaussian output over 500 mW. Also, laser stability has been significantly improved. The final design of the pump laser is modular to the extent that any single optical component can be removed and replaced without changing the optical alignment. The FIR cavity was modified by changing to a smaller bore, using gold-coated end mirrors, and using curved internal reflectors. The addition of buffer gas to the cavity provided a significant improvement in output power. Research supported by the Office of Fusion Energy, U.S. DOE, under Contract No. DE-AC05-840R21400 with Martin Marietta Energy Systems, Inc.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1138767
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