Pressure dependence of small signal gain and saturation intensity of a gold-vapor laser using various buffer gases in gain medium

Nezhad, M. Aghababaei; Sajad, Batool; Behrouzinia, S.; Salehinia, D; Khorasani, K.

doi:10.1016/j.optcom.2009.11.052

Cited by 14 publications

(10 citation statements)

References 8 publications

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“…However, since the Doppler broadening is sufficiently greater than the pressure broadening linewidth for a typi cal CBL as well as a CVL, the amplifying medium can be assumed to be an inhomogeneous broadened gain medium. The g 0 (cm −1 ) and E S (µJ cm −2 ) can be calculated with a leastsquares fitting of the experimental data into the Hargrove equation given by [14,20,21]…”

Section: Resultsmentioning

confidence: 99%

“…The CBL MOPA system consisted of two identical tubes with an inner diameter of 20 mm and a length of 48 cm. This is a similar setup to those in our previous works for CVL and GVL MOPAs [14,20,21]. Two identical cylindrical tubes were used as the oscillator and the amplifier and these were made of quartz with an inner diameter of 20 mm and an active gain length of 48 cm.…”

Section: Methodsmentioning

confidence: 99%

“…Figure 1 provides a schematic representation of the CBL MOPA that was arranged for our main experiment. The resonator cavity of the master oscillator, the synchroniza tion system, and the procedure for achieving the experimentsuch as synchronization processing and using neutral density filters (NDF) to provide data on the overall amplification ratio, which we use to determine the amplification parameters-are exactly the same as in our previous works [13,14,20]. The accuracy of the delay time is about 1 ns.…”

Section: Methodsmentioning

confidence: 99%

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The behavior of gain and saturation characteristics versus temperature in a copper bromide laser

et al. 2017

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A pair of copper bromide lasers in an oscillator-amplifier configuration was used to investigate the temperature dependence of the smallsignal gain, saturation intensity, and output power of the laser. The observations were explained in terms of the electron temperature and energy levels of transition. An optimum electrical input power of 1.6 kW and a corresponding operational temperature of 510 °C were determined for the maximum values of these parameters. The balance between the microscopic parameters, such as stimulated emission crosssection, laser upperlevel lifetime, and population inversion, which determine the behavior of the amplifying parameters and laser output power with respect to the operational temperature, has been investigated. We used the steadystate rate equation from the Hargrove model to determine the amplifying parameters, instead of the Frantz-Nodvik formula. The power extracted from the amplifier exceeds that achieved with the same device as the oscillator by more than 60%.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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The behavior of gain and saturation characteristics versus temperature in a copper bromide laser

et al. 2017

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“…M. Lima, Behrouzinia, & Khorasani, 2019;S. M. Lima, Behrouzinia, S., Salem, M.K., Elahei, M., Khorasani, K.,Dorranian, D. , (2017); Nezhad, Sajad, Behrouzinia, Salehinia, & Khorasani, 2010). In our previous work, the independencies of the amplifying parameters of CBL on the different amplifier tube length with identical diameter has been investigated, individually.…”

Section: Introductionmentioning

confidence: 99%

Gain radial distribution of copper bromide lasers

Behrouzinia

2020

IJFPS

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“…Meanwhile, in our previous works, we have observed the linear behavior of gain and saturation properties in terms of operating pressure at an interval of 25-75 Torr of the CVL amplifying medium, [12] and at an interval of 14-30 Torr of the GVL amplifying medium. [14] The difference of behavior of amplifying parameters between CBL and CVL/GVL versus pressure can be related to the interval of operational pressure and may be related to the presence of third body (Br atoms) in the gain medium. Finally, the behavior of output power versus buffer gas pressure is shown in Fig.…”

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confidence: 99%

Pressure Dependence of the Small-Signal Gain and Saturation Intensity of a Copper Bromide Laser

Aeinehvand¹,

Behrouzinia²,

Salem³

et al. 2017

Chinese Phys. Lett.

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A pair of copper bromide lasers in an oscillator–amplifier configuration is used to investigate the small signal gain and saturation intensity as amplifying parameters and output power of lasers, versus pressure of buffer gas. It is shown that the amplifying parameters and laser output power have a maximum value at optimum buffer gas pressure of 11 Torr. The challenge between microscopic parameters such as stimulated emission cross section, laser upper level lifetime, and population inversion, which determine the values of laser characteristics respective to the operational pressure of buffer gas, are investigated. Thus an optimum delay time of about 10 ns is determined, and a maximum output power equivalent to about 12 W is extracted. The amplifying parameters and measured output power of laser versus delay times show some local maxima and minima at the delay time interval of 6–43 ns.

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Pressure dependence of small signal gain and saturation intensity of a gold-vapor laser using various buffer gases in gain medium

Cited by 14 publications

References 8 publications

The behavior of gain and saturation characteristics versus temperature in a copper bromide laser

The behavior of gain and saturation characteristics versus temperature in a copper bromide laser

Gain radial distribution of copper bromide lasers

Pressure Dependence of the Small-Signal Gain and Saturation Intensity of a Copper Bromide Laser

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