Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Absorption Of Five To Six Micron Carbon Monoxide Laser Radiation By Water Vapor PDF full book. Access full book title Absorption Of Five To Six Micron Carbon Monoxide Laser Radiation By Water Vapor.
| Author | : Edward H. Newman |
| Publisher | : |
| Total Pages | : 124 |
| Release | : 1970 |
| Genre | : Lasers |
| ISBN | : |
| Author | : E. L. Harris |
| Publisher | : |
| Total Pages | : 92 |
| Release | : 1973 |
| Genre | : Gas lasers |
| ISBN | : |
Calculations of the absorption of CO laser radiation by water vapor are brought into good agreement with the experimental data by modifying the Lorentz line shape formula. Results of absorption and transmittance calculations made using the modified line shape formula are presented for CO laser lines and other wavelengths near 5 micrometers at various water vapor partial pressures. (Modified author abstract).
| Author | : E. L. Harris |
| Publisher | : |
| Total Pages | : 59 |
| Release | : 1973 |
| Genre | : |
| ISBN | : |
Calculations of the absorption of CO laser radiation by water vapor are brought into good agreement with the experimental data by modifying the Lorentz line shape formula. Results of absorption and transmittance calculations made using the modified line shape formula are presented for CO laser lines and other wavelengths near 5 micrometers at various water vapor partial pressures. (Modified author abstract).
| Author | : Dennis K. Rice |
| Publisher | : |
| Total Pages | : 39 |
| Release | : 1972 |
| Genre | : |
| ISBN | : |
An intracavity water vapor cell in conjunction with a CO laser was used to experimentally measure the absorptive losses introduced for 19 of the laser emission lines. The results indicate that the existing theoretical models are inadequate for predicting actual absorptance values for water vapor partial pressures in excess of 100 torr. The accepted spectral location of at least one water vapor absorption line was shown to be erroneous. A pressure broadening gas such as nitrogen was shown to increase the differential absorptive loss introduced by the water vapor for CO laser rotational lines. This result enhances the applicability of an intracavity water vapor cell as a device for limiting CO laser oscillation to lines having high atmospheric transmission. (Author).
| Author | : John Harold McCoy |
| Publisher | : |
| Total Pages | : 270 |
| Release | : 1968 |
| Genre | : Carbon dioxide |
| ISBN | : |
A carbon dioxide laser source and a long path multipass absorption cell have been used to measure the water vapor and carbon dioxide transmittance at three wavelengths in the 8 to 12 micron atmospheric window. The carbon dioxide data were analyzed by theoretical equations to determine the line strengths and Lorentz half width. An empirical equation was derived relating the water vapor transmittance to the amount of water vapor in the path. (Author).
| Author | : |
| Publisher | : |
| Total Pages | : 342 |
| Release | : 1975 |
| Genre | : Air |
| ISBN | : |
| Author | : John Curran Peterson |
| Publisher | : |
| Total Pages | : 490 |
| Release | : 1978 |
| Genre | : |
| ISBN | : |
| Author | : Ronald K. Long |
| Publisher | : |
| Total Pages | : 42 |
| Release | : 1971 |
| Genre | : |
| ISBN | : |
The report describes the progress on the experimental study of atmospheric water vapor absorption at CO, HF, and DF laser frequencies using a one km White absorption cell and laser sources. Experimental data at 8 CO laser frequencies is reported which has an overall accuracy of plus or minus 5%. The design and construction of a small pulsed electric discharge HF-DF laser is described. (Author).
| Author | : Gary Lee Trusty |
| Publisher | : |
| Total Pages | : 154 |
| Release | : 1972 |
| Genre | : Heat |
| ISBN | : |
A spectrophone cell and a data acquisition system were developed and used to make low level absorption measurements of carbon dioxide and water vapor. A 1 watt per line carbon dioxide laser was used as the source. Measurements were made of the absorption of the P branch of the 10.4 micron band of CO2. Results of these measurements were used to calculate the self broadened and foreign broadened Lorentz half widths of the lines in that band as a function of the rotational quantum number. The gases used for foreign broadening were nitrogen, argon and helium. Absorption measurements of water vapor-nitrogen and mixtures were made in the 10.4 micron region. The absorption coefficient of the continuum in this region was found to have a positive slope with increasing wavenumber. Preliminary studies were done measuring the temperature dependence of the water vapor absorption coefficient at wavelengths corresponding to the P(20) and the P(32) lines of the CO2 laser. The temperature range covered was from 30 C to 55 C.A positive temperature coefficient of about 0.5% change/C was obtained. (Author).
| Author | : S. S. R. Murty |
| Publisher | : |
| Total Pages | : 45 |
| Release | : 1975 |
| Genre | : Carbon dioxide lasers |
| ISBN | : |
The molecular absorption coefficients of carbon dioxide, water vapor, and nitrous oxide are calculated at the P16, P20, P22, and P24 lines of the CO2 laser for temperatures from 200 to 300 K and for pressures from 100 to 1100 mb. The temperature variation of the continuum absorption coefficient of water vapor is taken into account semi-empirically from Burch's data. The total absorption coefficient from the present calculations falls within +/- 20 percent of the results of McClatchey and Selby. The transmission loss which the MSFC CO2 pulsed laser Doppler system experiences has been calculated for the January 1973 flight-test conditions for the five P-lines. The total transmission loss is approximately 7 percent higher at the P16 line and 10 percent lower at the P24 line compared to the P20 line. Comparison of the CO2 laser with HF and DF laser transmission reveals the P2(8) line at 3.8 [mu]m of the DF laser is much better from the transmission point of view for altitudes below 10 km.
