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Author: Ross McLeary Publisher: ISBN: 9780642079510 Category : Gas lasers Languages : en Pages : 4
Book Description
This report describes a pulsed hydrogen-fluoride laser which has been constructed at MRL. The laser delivers an energy of 7 J in a microsecond pulse from vibrational-rotational transitions in the wavelength region 2.6-3.1 micrometers. It simultaneously produces 1 mJ of energy in a 1 microsecond pulse from pure rotational transitions in the wavelength region 10-17 micrometers. Originator furnished keywords include: Chemical lasers, Hydrogen fluoride lasers, Electric discharge, Pulse discharge.
Author: Ross McLeary Publisher: ISBN: 9780642079510 Category : Gas lasers Languages : en Pages : 4
Book Description
This report describes a pulsed hydrogen-fluoride laser which has been constructed at MRL. The laser delivers an energy of 7 J in a microsecond pulse from vibrational-rotational transitions in the wavelength region 2.6-3.1 micrometers. It simultaneously produces 1 mJ of energy in a 1 microsecond pulse from pure rotational transitions in the wavelength region 10-17 micrometers. Originator furnished keywords include: Chemical lasers, Hydrogen fluoride lasers, Electric discharge, Pulse discharge.
Author: Publisher: ISBN: Category : Languages : en Pages : 79
Book Description
An experimental study of HF chemical lasers operating on overtone transitions, OTs, in a photolytically initiated, pulsed laser facility was conducted. The primary objective was to obtain comparisons of the specific energy performance of pulsed HF, chain reaction driven, chemical laser resonators when operating only on fundamental transitions, delta V = 1, and only on first overtone transitions, delta V = 2. The initial efforts were the buildup of the experimental test facility with which excellent performance as an FT HF laser was demonstrated. However, attempts to produce OT lasing using lamda- variable reflectivity mirror coatings (to promote and suppress, simultaneously, the OT and FT mechanisms) were only marginally successful, even though major facility modifications were made to reduce cavity losses, suppress FT superradiance (ASE), suppress parasitic modes and increase pulse duration. Finally, CW OT lasing was demonstrated using the OT optical components in a combustion-driven, blowdown test facility. A specific energy level, sigma = 266 w/gm/sec, was inferred from the measurements. HF Chemical lasers, HF Overtone lasers, Pulsed photolytically initiated chemical lasers.
Author: C. R. Jones Publisher: ISBN: Category : Languages : en Pages : 16
Book Description
A small pulsed hydrogen-fluoride chemical laser is described. The electrically pulsed device is to be used as a probe laser in the measurement of the optical gain of a continuous-wave HF laser. Various operating characteristics of the tunable laser which are important in gain measurements are described. (Author).
Author: E. L. Garcia Publisher: ISBN: Category : Languages : en Pages : 60
Book Description
The Hydrogen Fluoride/Deterium Fluoride Laser is a fast flow electrical discharge operated chemical laser. Refitting of the subsystems of the laser was completed and lasing was observed utilizing a 100 percent reflectance mirror and a 95 percent reflectance output coupling mirror. The maximum multiline output power obtained was 2.6 Watts at 19.0 kV and 475 mA. The data obtained was in general agreement with previously reported data. However, an increase in power output from 1.6 to 2.6 Watts was obtained by utilization of a Hipotronics power supply that enabled usage of higher output voltages for SF6 dissociation. Measurements were also taken over a variation of the He, SF6, H2 and O2 flow rates resulting in the change of optimum flow rates for the above listed gases. Target reflectivity/absorptivity measurements were taken and a dependence on incidence angle with the laser beam was found. For the P-doped Silicon wafer used, the power absorbed decreased over the range of 25 to 60 degrees. At the 25 degree angle approximately 95 percent of the incident power was absorbed. The reflected power was found to increase with the increase in target angle with approximately 95 percent of the incident power being reflected at 60 degrees. Originator-supplied keywords include: Hydrogen Fluoride/Deterium Fluoride Laser, Absorptivity/Reflectivity.
Author: Joseph F. Spinnler Publisher: ISBN: Category : Languages : en Pages : 48
Book Description
This report describes results of continuing experiments directed toward chemical lasers in a flow system and a single-pulse system. A new laminar diffusive-mixing system for obtaining very fast mixing rates is described. Conclusive evidence for lasing action of hydrogen fluoride in the single-pulse system is offered. Certain theoretical considerations are discussed. Fast flow velocities; fast, reproducible mixing; simple flow patterns; and fast, truly homogeneous initiation reaction have been recognized as critical factors in successfully achieving laser action in a continuous-flow hydrogen-fluorine system and several limitations inherent in the initial approach have been removed. (Author).
Author: Ross McLeary
Author: Ross McLeary
Author: 
Author: Keith Emery
Author: Joseph J. T. Hough
Author: Joseph A. Izatt
Author: C. R. Jones
Author: E. L. Garcia
Author: Joseph F. Spinnler
Author: John Rogers Creighton
Author: Robert Shiu Fuh Chang