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

Abstract

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.

Effect of addition of H2 to the He buffer gas on amplifying parameters and output power of a copper bromide laser

“…To measure the amplifying parameters, Hargrove's model was used instead of the Frantz-Nodvik formula, which has been used by other researchers previously [20,21]. The setup of experiments was similar to that in previous work on CBVL MOPAs [7][8][9][10]. One heated side-arm reservoir of CuBr, which was located halfway along the tubes, was used to seed the discharge zone with the CuBr vapor.…”

“…Therefore, to reduce the operating temperature of a pure CVL, copper halides such as copper bromide are used. The operating temperature of copper halide lasers depends on the vapor pressure of the compounds, which is about 500 • C for the copper bromide vapor laser (CBVL) and is lower than the operating temperature of a pure CVL [5][6][7][8][9][10]. Two principal outputs with wavelengths of 510.6 and 578.2 nm have been obtained from a halide laser, similar to CVL lasers.…”

“…The CBVL MOPA systems have been utilized in different technological applications, and also the development of the MOPA system in a CBVL operating at 110 W average power has been reported [18,19]. In our previous works, we used a MOPA system in the CBVL to provide higher output power and beam quality simultaneously [7][8][9][10]. The gain characteristics and temperature profile have been achieved for CBVLs [9].…”

“…The dependence of the amplifying parameters on amplifier tubes of different length with identical small diameter was investigated [7]. In addition, the behavior of He, He-Ne and Ne buffer gases on amplifying parameters and output power of a copper bromide laser were studied [10]. In this work, the MOPA system of the CBVL has been employed to investigate the effect of a small amount of hydrogen added to the He buffer gas on the small-signal gain (g 0 ), saturation energy intensity (E s ) and output power (P out ).…”

CuBr-усилитель яркости с частотой следования импульсов сверхизлучения/усиления до 200 kHz

“…2, b). Это значение сопоставимо с усилением CuBr-активной среды (0.07 cm −1 ) с большим объемом и меньшей частотой следования импульсов накачки (20 kHz) [13].…”