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Johns, T.W.
Cornell Univ., Ithaca, N.Y. (USA)1974
Cornell Univ., Ithaca, N.Y. (USA)1974
AbstractAbstract
No abstract available
Primary Subject
Source
1974; 150 p; University Microfilms Order No. 74-27,539.; Thesis (Ph. D.).
Record Type
Report
Literature Type
Thesis/Dissertation
Country of publication
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INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] The output power of a high power (1 kW or more) CO2 gas transport laser is stabilized by flowing the gas mixture over copper plated baffles in the gas channel during operation of the laser. Several other metals may be used instead of copper, for example, nickel, manganese, palladium, platinum, silver and gold. The presence of copper in the laser gas circuit stabilizes output power by what is believed to be a compensation of the chemical changes in the gas due to the cracking action of the electrical discharge which has the effect of diminishing the capactiy of the carbon dioxide gas mixture to maintain the rated power output of the laser. (U.S.)
Original Title
Patent
Primary Subject
Source
27 May 1975; 4 p; US PATENT DOCUMENT 3,886,481
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] The gas dynamic laser device is provided with an expansion chamber arranged between a heating chamber for the CO-gas and the resonance chamber. The expansion chamber is initially evacuated for producing a rarefaction wave. Between the heating chamber and the expansion chamber there are arranged rapid release means such as a valve or a diaphragm. Pressure recovering means are connected to the other side of the resonance chamber
Original Title
Patent
Primary Subject
Source
11 Nov 1975; 6 p; US PATENT DOCUMENT 3,919,662
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Krupke, W.F.
California Univ., Livermore (USA). Lawrence Livermore Lab1975
California Univ., Livermore (USA). Lawrence Livermore Lab1975
AbstractAbstract
[en] A mechanism is proposed for producing coherent radiation in CO2 vibrational-rotational transitions at wavelengths near 14 and 16 microns. A device configuration for its implementation is given. (U.S.)
Primary Subject
Source
21 Jul 1975; 10 p
Record Type
Report
Report Number
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Reference NumberReference Number
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INIS IssueINIS Issue
AbstractAbstract
[en] The device includes a closed cycle gasdynamic laser wherein the lasing fluid is recirculated in a closed loop. The closed loop includes a nozzle array, a lasing cavity and a diffuser. The exit of the diffuser is connected to the inlet to the nozzle array with a fuel heat exchanger located in the lasing flow and a pumping means located between the heat exchanger and the nozzle array. To provide for cooling of the pumping means and to improve diffuser performance, gas bled from the diffuser is cooled by two heat exchangers and pumped into cooling passages in the pumping means. The heat exchangers for cooling the flow to the pumping means are located in series and carry fuel from a supply to an injector in said combustor and the heat exchanger in the lasing flow cools the fluid and carries the fuel from a supply to an injector in said combustor. (U.S.)
Original Title
Patent
Primary Subject
Source
27 May 1975; 4 p; US PATENT DOCUMENT 3,886,475
Record Type
Patent
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
No abstract available
Primary Subject
Record Type
Journal Article
Journal
IEEE J. Quant. Electron; v. QE-10(2); p. 208-213
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Suart, R.D.; Levesque, R.J.; Snelling, D.R.
Defence Research Establishment Valcartier, Courcelette, Quebec (Canada)1974
Defence Research Establishment Valcartier, Courcelette, Quebec (Canada)1974
AbstractAbstract
[en] Output power, gas charge composition, and electrical discharge properties of the intermediate high repetition rate laser (intermediate HRRL) were measured. Factors, other than the normal progressive loss of CO2 due to electrical discharge, controlling the output power were investigated. The conversion of CO2 into CO an O2 is an important effect leading to power loss in the HRRL
Primary Subject
Source
Mar 1974; 53 p; Available from NTIS. $4.25.
Record Type
Report
Report Number
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
No abstract available
Primary Subject
Record Type
Journal Article
Journal
IEEE J. Quant. Electron; (qe-10); p. 2
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INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Energies of the rotational-vibrational transition lines are studied in a turnable TEA CO2 laser which consists of three cavity mirrors by the use of the grating-output-reflector configuration. In this system, the energy of the 10.6 μm P-20 line is more enchanced by about 5 percent than other transition lines. This effect is attributed to the pressure broadening of the hot band R-23 ((0,11,1)-(1,11,0)) transition in 10.6 μm P-20 line. The experimental values are absorbed to agree with the theoretical results. (Author)
Primary Subject
Record Type
Journal Article
Journal
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AbstractAbstract
[en] The gain saturation properties of a double discharge CO2 laser for nanosecond pulses are presented. The results found are in good agreement with those appearing in the literature. (U.S.)
Primary Subject
Record Type
Journal Article
Journal
IEEE (Inst. Electr. Electron. Eng.) J. Quant. Electron; v. QE-10(12); p. 901-906
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