Laser system and method and laser amplifier for use therewith

Details Laser system and method and laser amplifier for use therewith Laser system and method and laser amplifier for use therewith

1978-08-22

1979-07-24

Kamm, William E.

Surgery

Truss

Pad

330 43, 350 9610, A61B 508

Patent

active

041619447

ABSTRACT:
A laser system employs a laser amplifier doped with Neodymium ions having a planar input surface receiving a laser beam having a wavelength of 1.06 microns from a laser generator also employing a Neodymium doped crystal. The laser amplifier provides an output face axially aligned with the input face and having a diameter of approximately one-fifth of the input face diameter. Approximately eighty-eight percent of the axial length of the amplifier crystal is tapered to provide a continuously decreasing cross-section from a point near the input face to a point near the output face and forming a tapered spontaneous pumping zone of substantially reduced diameter adjacent the output face. A special retainer encloses the laser amplifier which directs output pulses from the output face through a bronchoscope to vaporize carbon and possibly other particles located on alveoli within a lung of a living mammal. X-ray producing particles may be introduced to the alveoli for subsequent vaporization by the amplified laser beam which is sensed to provide an output for diagnosis purposes.

REFERENCES:
patent: 1542183 (1925-06-01), Steinberg
patent: 3417744 (1968-12-01), Mishkin et al.
patent: 3471215 (1969-10-01), Snitzer
patent: 3769966 (1973-11-01), Youdin et al.
patent: 3777742 (1973-12-01), Aumiller et al.
patent: 3801181 (1974-04-01), Kitano et al.
patent: 3858577 (1975-01-01), Bass et al.
patent: 3974454 (1976-08-01), Sturel

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