摘要:
A two phase reactor includes a source of liquid reactant and a source of gas reactant. A chamber has an inlet coupled to the source of gas reactant and a flat jet nozzle coupled to the source of the liquid reactant.
摘要:
An improved singlet delta oxygen generator (SOG) and method of its use are disclosed. The improved SOG is compact and scalable, capable of operating in a zero-gravity or low gravity environment, requires no gaseous diluent or buffer gas, and is capable of operating at pressures as high as one atmosphere. The improved SOG also efficiently utilizes the reactants and produces a O2(1Δ) stream that is largely free of chlorine and water vapor contamination and therefore does not require a BHP regeneration system or a water vapor trap. When used as part of a COIL system, the SOG may be part of a plenum that directly feeds the laser's nozzle. The close proximity of the SOG to the laser cavity allows operation of the SOG at higher pressures without significant depletion of available O2(1Δ) through collisional deactivation.
摘要:
A method and apparatus for producing molecular oxygen in the excited singlet delta oxygen electronic state for use as an excited species reactant in a chemical laser. Flowtubes defined by permeable membranes are used to mix the gas and liquid phase reactants to generate singlet delta oxygen and also to separate the generated singlet delta oxygen from the liquid phase products and reactants thereby eliminating liquid reactant carryover.
摘要:
A system and method for obtaining improved performance of chemical laser systems by exercising control over the radiation environments of these devices. Proper control of the AERE is achieved through the control of the wall construction including the choice of materials, placement and contours, the control of the wall temperatures (separately from the gas phase temperature), and the use of optical filters or added radiation sources, to achieve a synergistic optimum performance that demonstrates superior performance characteristics beyond that which could be achieved without the control of the AERE. This control is exercised through the proper application of anti-reflecting coatings for those spectral ranges that need to be mitigated and reflecting coatings for those frequencies that need to be augmented. The determination of these frequencies is made through the application of a novel mathematical model to the kinetic processes of the laser system.
摘要:
The invention herein is directed to a dual-chamber combustion laser assembly having lighter weight (per unit flow area), a more compact, flexible configuration for packaging in spacecraft, aircraft, or ground mobile vehicles, higher mass efficiency from lower heat loss and proven power extraction efficiency of linear lasers, superior output beam quality by incremental compensation of gain medium optical path disturbances and by reduction in time-dependent variations in structural and gain medium characteristics, lower cost and shorter fabrication time for modular dual flow laser and linear optics, more efficient pressure recovery with side-wall isolation nozzles and compact diffuser configurations, and increased small signal gains for more efficient extraction of overtone power.
摘要:
A metallic photonic box capable of intensifying light at a certain wavelength, includes: a metallic surrounding forming a resonance chamber; and an insulator layer, disposed in the resonance chamber, having a predetermined dimension defining a cut-off wavelength, which inhibits light of a wavelength greater than the cut-off wavelength from resonating, whereby when the metallic photonic box is heated to generate light radiation, the light radiation is intensified at a wavelength rage predetermined by the cut-off wavelength.
摘要:
The invention herein is directed to a dual-chamber combustion laser assembly having lighter weight (per unit flow area), a more compact, flexible configuration for packaging in spacecraft, aircraft, or ground mobile vehicles, higher mass efficiency from lower heat loss and proven power extraction efficiency of linear lasers, superior output beam quality by incremental compensation of gain medium optical path disturbances and by reduction in time-dependent variations in structural and gain medium characteristics, lower cost and shorter fabrication time for modular dual flow laser and linear optics, more efficient pressure recovery with side-wall isolation nozzles and compact diffuser configurations, and increased small signal gains for more efficient extraction of overtone power.
摘要:
The COIL gain generator system includes a reactor for producing singlet delta oxygen and a mechanism for mixing high momentum diluent with the singlet delta oxygen and with iodine for producing a high momentum, low static temperature mixture of the singlet delta oxygen, diluent and iodine. The singlet delta oxygen and the iodine react to produce excited iodine atoms which can lase efficiently due to the low static temperature and can, after lasing, recover to high pressure in a diffuser due to the high momentum of the mixture. This provides the capability of using a chemical pump which allows a completely sealed system with no outside exhaust.
摘要:
A laser having a gain medium which includes boron oxide (BO) is shown to have an increased optical power output and to achieve other benefits from the addition of carbon tetrafluoride (CF.sub.4) to the gain medium. CF.sub.4, when mixed with BO, induces a vibrational relaxation of a BO(A.sup.2 .pi.) population to a single vibrational level without a significant quenching of the BO(A.sup.2 .pi.) state. The rate of vibrational relaxation induced by the CF.sub.4 additive occurs in an interval of time which is less than that associated with the radiative decay and quenching of the BO(A.sup.2 .pi.) state.
摘要:
In a laser arrangement, solid or liquid material, at least part of which comprises a laser amplifying medium, is atomized in a gas prior to being applied to a discharge region. In one embodiment of the invention, the gas is combustible and is ignited to produce a flame which provides heating of the material. The invention is particularly applicable to metal vapour lasers.In another embodiment of the invention, the material is atomized in an inert gas and a discharge within a laser discharge tube is used to provide excitation.