Continuous-wave CH&amp;lt;inf&amp;gt;3&amp;lt;/inf&amp;gt;F waveguide laser at 496 µm: Theory and experiment

DeTemple, T. A.; Danielewicz, E.

doi:10.1109/jqe.1976.1069034

Cited by 78 publications

(15 citation statements)

References 19 publications

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“…Of the absorbed quanta, 25% are converted into useful output [35], [36]. Hence we anticipate that an overall conversion efficiency around 0.1%.…”

Section: The Output Characteristic Of the Sourcementioning

confidence: 99%

“…α K is the equilibrium fraction of the K level within the certain vibrational state, and Г r is the rotation relaxation rate, Г K is the collision rate caused by the molecules of the rotational levels relaxed to the K levels by collision (△K collision rates), Г is the vibration de-excitation rate [23], [24]. Solving the above rate equations, we can obtain the expression of the saturation absorption intensity [24]:…”

Section: Model and Theorymentioning

confidence: 99%

“…where Q q is the quantum efficiency, Q c is the efficiency of the THz cavity defined by Q c = (-0.5lnR)/(γ THz -0.5lnR) and R is the reflectivity of the output coupler THz grating, γ THz is the THz cavity loss coefficient per pass, γ CO2 is the CO 2 laser cavity loss, P CO2 is the incident CO 2 laser power, η is the absorption coefficient [23], [24]. I CO2 is the traveling-wave intensity which related the I SAT given in (2).…”

Section: The Output Characteristic Of the Sourcementioning

confidence: 99%

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Numerical Study of Compact Terahertz Gas Laser Based on Photonic Crystal Fiber Cavity

Yan

Zhang

et al. 2016

J. Lightwave Technol.

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Abstract-We report a compact terahertz (THz) gas laser based on the cavity photonic crystal fiber (PCF). This compact structure consists of a large air core PCF constructed by high-density polyethylene (HDPE) tubes. The 2.52 THz wave can be generated in the reaction cell filled with the CH 3 OH gas. The reaction cell should shrink the volume of THz sources. The saturation intensity is analyzed based on the rate equations theory. Numerical calculations show that the THz wave can realize the fundamental mode transmission and obtain a lower confinement loss of 5.6 dB/m and the flat bending loss spectrum. The optimum pressure, pump threshold are analyzed and the THz output power can reach the magnitude of 10mW. We combined the THz pump technology and the excellent transmission characteristics of the PCF together. This compact THz gas laser gives a new method to realize the THz source with high beam quality, low transmission loss, well-distributed bending shape and small size.

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“…Of the absorbed quanta, 25% are converted into useful output [35], [36]. Hence we anticipate that an overall conversion efficiency around 0.1%.…”

Section: The Output Characteristic Of the Sourcementioning

confidence: 99%

Section: Model and Theorymentioning

confidence: 99%

Section: The Output Characteristic Of the Sourcementioning

confidence: 99%

See 1 more Smart Citation

Numerical Study of Compact Terahertz Gas Laser Based on Photonic Crystal Fiber Cavity

Yan

Zhang

et al. 2016

J. Lightwave Technol.

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“…In any case, most THz lasers can be treated with homogeneously broadening due to the small Doppler contribution to the widths of their emission lines [16,17]. We take into account a THz laser with the output coupler at one end and assume the transmittance of the output coupler is T, whereas the loss B and the absorption A from all mirrors are assumed in the other laser mirror.…”

Section: Output Power Influenced By Slight Shift Of Transmittancementioning

confidence: 99%

A theoretical investigation of wedged capacitive strip-grating output couplers for optically pumped terahertz lasers

Zuo

Meng

et al. 2010

Optics Communications

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“…-We analyze the FIR laser parameters in the framework of our goals, high power level (10-100 mW range whenever possible), emphasis on short FIR wavelengths range (40-300 pm) and ease of operation at different frequencies. Although discarding quantum effects, rate equation models of CW FIR lasers [1][2][3][4][5][6][7][8] describe fairly well a large part of the physical mechanisms involved. They allow to write the FIR output power in a ciosed form which we reproduce for the purpose of the discussion [2,5,8] (*) This work was supported in part by the Groupement de Recherches Coordonnées du C.N.R.S.…”

Section: Classificationmentioning

confidence: 99%

Design and performances of a CW CH3OH waveguide laser

Lourtioz

Adde

Bouchon

et al. 1979

Rev. Phys. Appl. (Paris)

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2014 On décrit la réalisation et les performances d'un laser continu à alcool de structure guide d'onde pompé optiquement. Il assure un fonctionnement stable dans le domaine des courtes longueurs d'onde submillimétriques avec un niveau de puissance de 10 à 100 mW. Des résultats significatifs présentés à 70 03BCm et 118 03BCm soulignent les lignes directrices essentielles au choix des paramètres du laser.Abstract. 2014 The design and performances of an efficient CW waveguide optically pumped CH3OH laser are described for stable operation 10-100 mW level in the short submillimeter wavelength region. Significant results at 70 03BCm and 118 03BCm underline the more stringent guide-lines in the selection of the laser parameters.

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Continuous-wave CH<inf>3</inf>F waveguide laser at 496 µm: Theory and experiment

Cited by 78 publications

References 19 publications

Numerical Study of Compact Terahertz Gas Laser Based on Photonic Crystal Fiber Cavity

Numerical Study of Compact Terahertz Gas Laser Based on Photonic Crystal Fiber Cavity

A theoretical investigation of wedged capacitive strip-grating output couplers for optically pumped terahertz lasers

Design and performances of a CW CH3OH waveguide laser

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