Precision optical pulse train generator

Details Precision optical pulse train generator Precision optical pulse train generator

1995-04-18

1996-11-26

Epps, Georgia Y.

Optical: systems and elements

Single channel simultaneously to or from plural channels

By partial reflection at beam splitting or combining surface

359629, 359618, G02B 2714, G02B 2710

Patent

active

055791662

ABSTRACT:
A design for a fast absorption optical tomography instrument is disclosed. The subject invention is capable of generating 100 projections of 100 elements each in less than 200 ns. It comprises and optical pulse generator, a tomography ring with temporally multiplexed fiber-optic fan-beam sources and fast detectors, and data acquisition electronics. A single short pulse (<10 ns) of radiation tuned to an absorption transition of the chemical species of interest produces a cross sectional image of concentration. Supplying two such pulses to the instrument can yield simultaneous quantitative images of temperature and absolute concentration in fields with temperature inhomogeneities. Additional pulses lead to concentration images of additional species.

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