Time dependence of the gain of a CuBr laser

Chan, W. C.; Liu, H.P.; Yen, Shwu-Huey; Chen, W.Y.; Lin, Yan‐Hui; Young, K.

doi:10.1016/0030-4018(92)90224-f

Cited by 7 publications

(5 citation statements)

References 6 publications

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“…It was found that the gain measurement for a CBL amplifier via the modified amplified spontaneous emission (ASE) technique coincided very well with the Frantz-Nadvik formula [18]. In this method, only the g 0 was measured to about 0.07 cm −1 for a tube diameter of 6 cm and a length of 68 cm [19].…”

Section: Resultsmentioning

confidence: 70%

“…CBL MOPA sys tems have been used for different technological operations, such as material processing [15], highspeed micromachin ing applications [16], and special applications [9,17]. Other researchers made gain coefficient measurements in CBLs under various conditions in discharge tubes of various geo metrics [18,19]. However, the simultaneous measurement of amplifying parameters and their dependence on some oper ational parameters has not been reported up to now.…”

Section: Introductionmentioning

confidence: 99%

“…However, the simultaneous measurement of amplifying parameters and their dependence on some oper ational parameters has not been reported up to now. In this work, a MOPA system based on homebuilt CBLs has been designed to characterize the amplifying parameters using the Hargrove model, instead of the Frantz-Nodvik form ula, which has previously been used by other researchers [18,19]. The electrical input power and tube wall temper ature dependences of the amplifying parameters and output power of the system have been investigated.…”

Section: Introductionmentioning

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: 70%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

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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“…For measuring of the amplifying parameters, we used the Hargrove's model instead of the Frantz-Nodvik formula which has been used by other researchers, previously [17,18]. The setup of experiments is similar to our previous works for CBL MOPAs [7][8][9].…”

Section: Methodsmentioning

confidence: 99%

Various buffer gas effects on amplifying parameters of a copper bromide laser

Lima¹

2020

Laser Phys.

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A pair of Copper Bromide lasers in an oscillator-amplifier configuration was used to study the dependence of the small-signal gain (g 0 ), saturation energy intensity (E s ) and output power on various types of Buffer gases in CuBr vapor lasers. The amplifying parameters and output power of the system were measured at different buffer gas pressure and the optimum pressure of 11, 17 and 23 torr were obtained for He, He-Ne and Ne, respectively. The values of these parameters were different for various gases used in the gain medium. It was shown that the use of He has more efficient and output power than that of Ne or their mixed ones in CuBr lasers. The type of buffer gas used in the gain medium can affect the microscopic parameters, which in turn affects the operation and output power.

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“…In this work, two kinds of halide lasers-i.e. CuBr and CuCl lasers-have been designed to characterize the amplifying parameters, individually, through the Hargrove model instead of the Frantz-Nodvik model, which has been used by others [17,18]. It is shown that the amplifying parameters and amplifier output power of two kinds of halide lasers versus the PRF have the same oscillatory behavior, and some local maxima and minima values occur at the same special PRFs.…”

Section: Introductionmentioning

confidence: 99%

Acoustic effects in halide lasers

Aeinehvand¹,

Behrouzinia²

2018

Laser Phys.

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Oscillations in the output power of halide lasers were recorded by varying the excitation frequency from 11.7 to 30 kHz. An effect arises in the laser tube, which performs both as an optical and an acoustic resonator at the acoustic resonant frequencies, just like other metal vapor lasers. It is shown that a similar effect occurs when amplifying the parameters of lasers. In other words, the oscillatory behavior of laser output power comes from the competition between the microscopic laser parameters and the excitation frequency as an operational and macroscopic parameter.

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Time dependence of the gain of a CuBr laser

Cited by 7 publications

References 6 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

Various buffer gas effects on amplifying parameters of a copper bromide laser

Acoustic effects in halide lasers

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