USA As Represented by Secretary of the Navy

J Gary Eden

Jeffry Golden

Redge A Mahaffey

Thomas J Manuccia, Jr

John A Pasour

A Wahab Ali

A simple compact optical device and method for quickly measuring the concentration of CO and CO.sub.2, bound to hemoglobin or dissolved in a person's blood using optical techniques which do not require removing a blood sample from the body. It also provides a simple fiber optic device for measuring blood-gas concentrations of critical internal points of the circulatory system such as the aorta.

Infrared optical measurement of blood gas concentrations and fiber optic

A technique for lasing a gas in a gas lasing device to obtain stimulated light emission at a desired wavelength by bottlenecking the high gain transitions in the gas so that certain low gain transitions which will yield the desired wavelength are now able to oscillate. This technique comprises the steps of optimizing the mirror transmission for the desired light frequency, and pumping the laser gas with a pulse whose width is much longer than that required to bottleneck the high gain transitions. This technique may be utilized with both molecular and atomic gases.

Laser bottlenecking technique

An optically pumped laser which is operative by photolysis of a rare gas (RG)-halogne atom (X) compound (RGX.sub.2) which creates lasing from the RGX* molecule the RGX* molecule being diatomic. This type of laser is gaseous but a solid fuel is used to supply the gas; therefore the system is self contained.

Xenon fluoride and mercury chloride photodissociation lasers

A high-power gas laser pumped by an intense, pulsed, space charge-and current-neutralized ion beam. A high-pressure gas in the laser cavity is ionized by an ion beam. Atomic processes occur which result in a population inversion for the excited states of the gas. Coherent radiation is then emitted by the excited gas atoms in the inverted state. The light is amplified as it traverses the gas. Multiple traversal can be obtained by using an optical cavity comprising mirrors which reflect the light into the excited gas so that the light can be further amplified with each pass through the cavity. Extraction of light energy is done by using a partially transmitting mirror as part of the optical cavity.

Growing community of inventors

Bowie, MD, United States of America

J Gary Eden