Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1997-10-21
2000-08-08
Oda, Christine K.
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359173, 324316, H04B 1012
Patent
active
061010154
ABSTRACT:
A variable-coupling quasioptical electron paramagnetic resonance apparatus. In one embodiment, the variable-coupling quasioptical electron paramagnetic resonance apparatus includes a variable coupling quasioptical resonance cavity constructed from two back-to-back Fabry-Perot interferometers. One Fabry-Perot interferometer is formed from two partially reflecting mirrors. The second Fabry-Perot interferometer is an interferometer formed from one of the partially reflecting mirrors and a back mirror. A sample to be studied is placed within the cavity adjacent the partially reflecting mirrors and between one of the partially reflecting mirrors and the back mirror. The relative spacing of the partially reflecting mirrors and the back mirror is adjustable. With this arrangement, the interferometer can be made to act as a single mirror with variable reflectivity, thereby permitting incident radiation reaching the sample to be varied precisely and continuously.
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Anderson James R.
Budil David E.
Earle Keith A.
Freed Jack H.
Northeastern University
Oda Christine K.
Shrivastav Brij B.
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