Frequency tunable single-line pulsed first-overtone carbon monoxide laser

Basov, N G; Hager, Gordon D.; Ионин, А. А.; Kotkov, A. A.; Kurnosov, A K; McCord, John E.; Napartovich, Anatoly P.; Селезнев, Л. В.; Turkin, N G

doi:10.1016/s0030-4018(00)00653-2

Cited by 12 publications

(8 citation statements)

References 18 publications

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“…CW and pulsed CO lasers can be doubled to wavelengths between 2.5 and 4.2 µm. 41 The LOK Co. (Russia) offers a 200-kW CO laser that can be doubled with ~ 30% efficiency 42,43 . JSC Energomashtechnika also sells "diffraction-limited" 5-kJ CO 2 lasers and "mobile," "diffraction-limited" 100-kW CO 2 lasers § .…”

Section: Notional Third World Anti-satellite (Asat) Gblmentioning

confidence: 99%

Ground based laser triggered discharges on satellite solar arrays

Solin

2005

SPIE Proceedings

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Section: Notional Third World Anti-satellite (Asat) Gblmentioning

confidence: 99%

Ground based laser triggered discharges on satellite solar arrays

Solin

2005

SPIE Proceedings

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“…FO CO laser operates within 2.5-4.2 .tm spectral range, that corresponds to overtone ro-vibrational transitions (V+2, J-l)-*(V,J) with V=4-36, J=4-25 [4,5,11]. Table I makes possible to compare the spectral densities of emission lines of FO CO laser and those of chemical HF and DF lasers also operating in the considered spectral region.…”

Section: Spectroscopy Of Atmospheric Gases Within Fo Co Lasing Spectrmentioning

confidence: 99%

Multicomponent gas analysis with first-overtone CO laser

et al. 2002

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The quantitative analysis of sensitivity and selectivity characteristics for spectroscopic gas detection with different midinfrared molecular lasers was carried out. In particular, the partial and cross sensitivity, the partial selectivity and total parameter of selectivity and sensitivity for gas detection in gas mixture of seven components with HF, DF and firstovertone (FO) carbon monoxide lasers were calculated. The analysis demonstrated that FO CO laser due to its spectral properties is very perspective source of light for laser spectroscopy of multicomponent gas mixtures. The FO CO laser spectral range (2.5-4.2 microns) overlaps the "transparency window" of the atmosphere in the wavelength range (3 -4 microns) and covers that of HF and DF lasers, with its ro-vibrational line spacing being several times less thm that of those lasers. The FO CO laser spectral lines coincide with a large number of absorption lines belonging to numerous organic and non-organic substances which can be found in plasma induced by laser ablation. The linear and nonlinear absorption of the FO CO laser by different gaseous substances was calculated and compared with the experimental data.

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“…The electrically-excited carbon monoxide (CO) gas laser, operating on the CO fundamental infrared band around 5 It wavelength, remains one of the most efficient high power lasers that is scalable to very high c.w. outputs.…”

Section: Nfroductionmentioning

confidence: 99%

“…it must be emphasized that the results shown in Figs. [5][6][7] were obtained with a CO partial pressure of 50 Ton. Nevertheless, the nonequilibrium vibrational up-pumping necessary to drive the nanotube synthesis process also has been demonstrated to occur at CO pressures in excess of one atmosphere'9.…”

Section: Single-walled Carbon Nanotube Synthesis In Optical Dischargesmentioning

confidence: 99%

High-power CO lasers and some recent applications

et al. 2002

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The electric-discharge-excited carbon monoxide laser is one of the most efficient laser sources known that is scalable to very high continuous wave powers. We review work at Ohio State where such lasers are used to excite flowing molecular gas plasmas, in mixtures of CO and other diatomic gases, including air. These plasmas are stable, diffuse, and can be operated at high gas pressures and low gas kinetic temperature. They are being employed for various plasma chemistry applications. Recent results are presented in which such an "optically pumped" plasma reactor is used to synthesize single-walled carbon nanotubes, which show surprising order and alignment 1NFRODUCTIONThe electrically-excited carbon monoxide (CO) gas laser, operating on the CO fundamental infrared band around 5It wavelength, remains one of the most efficient high power lasers that is scalable to very high c.w. outputs. CO lasers have a demonstrated thermal conversion efficiency, electrical power in to broadband laser output, of flth 50% '. Systems have been built with c.w. or average powers in the MW range?'3. Despite these impressive performance levels, CO lasers have not been widely employed in industrial applications, and are still rather uncommon even in the research laboratory. The most important cause of this neglect is undoubtedly the need for operation at cryogenic gas temperatures to achieve the highest efficiency. The bestperforming systems have gas temperatures of -425K. Even if the necessary cooling of the system is charged against performance, the overall efficiency ofa closed cycle system can be a respectable 3Ø%4, still a leader among gas lasers. The systems complications of providing the requisite degree of cooling, however, with the consequent capital and operational costs, commonly act against the laser being the system of choice.Further drawbacks include the well-known feature that the laser output at the highest powers and efficiency is obtained when operating the system as a broadband oscillator. In this case, the output is strongly multi-line, being distributed over some tens ofvibration-rotation spectral lines range from -4.7 to 5.7 t wavelength. Further, some of these lines are strongly absorbed by water vapor, degrading performance in applications involving transmission through moist atmospheres. Intense work, continuing in recent years, led by the Gas Laser Laboratory at the Lebedev Institute in Moscow and Air Force Research Laboratory at Kirtland AFB, has led to considerable mitigation of these problems. CO lasers are being developed with good single line, or restricted wavelength multiline, performance on both the CO fundamental band and the first overtone band at 2.5However, performance is still below the broadband levels, and such line selection operation has its own systems complications.Notwithstanding these difficulties, the high power and efficiency of CO lasers at mid-IR wavelengths make them intriguing sources for certain advanced processing applications. Such applications involve using the laser to create larg...

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Frequency tunable single-line pulsed first-overtone carbon monoxide laser

Cited by 12 publications

References 18 publications

Ground based laser triggered discharges on satellite solar arrays

Ground based laser triggered discharges on satellite solar arrays

Multicomponent gas analysis with first-overtone CO laser

High-power CO lasers and some recent applications

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