Effects of helium addition to Ar-Xe mixtures in high-pressure atomic-transition xenon lasers

Suda, Akira; Wexler, B. L.; Riley, Kevin J.; Feldman, B. J.

doi:10.1109/3.59672

Cited by 8 publications

(10 citation statements)

References 13 publications

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“…The generated spectrum in a gas mixture containing Ar-Ne Xe is the same as in an Ar-Xe mixture. Ne as a buffer gas does not influence the generated spectrum in the same way as He by depopulating the lower laser level in a selective way [10,11]. As reported earlier for pulsed systems [12], it can be seen from Fig.…”

Section: Experiments and Discussionsupporting

confidence: 59%

Spectral investigation of cw rf-pumped atomic Xe laser with a slab geometry

et al. 1996

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Abstract. A radiofrequency excited atomic Xe slab laserwith an active volume of 2 x 10 x 300 mm 3 using a quartz envelope containing the laser-gas mixture shows a stable cw performance with an output power of almost 1 W. The free-running system oscillates, depending on gas composition and density, on several lines between 1.73 and 3.51 lam. Line competition phenomena are observed. Single-line oscillation yields more than 500 mW. PACS: 42.55; 42.60; 52.90In our previous paper we presented experiments with a continuous wave (cw) radiofrequency (rf) excited atomic Xe laser in a slab geometry having aluminium electrodes. A laser output power of 1.5 W and an efficiency of up to 0.8% were reported [1]. The main problem with this system was that its operation lasted for a relatively short time at the high output level. The output power decreased rather strongly after about 1 min. After 5-10 min of operation, during which the output level decreased considerably, a more stable regime was obtained. Although the measured input power also decreased with time, the decrease in output power was faster, probably due to changes in discharge properties [2] and to electrode effects [3]. Apparently, the discharge was perturbed by impurities. In this article we report on our investigation of a cw Xe laser in a slab geometry with the rf electrodes mounted outside the laser-gas volume. In this configuration the laser gas is contained in a closed rectangular thin quartz or pyrex glass tube and the electrodes are located close to the outer wall of the tube.

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Section: Experiments and Discussionsupporting

confidence: 59%

Spectral investigation of cw rf-pumped atomic Xe laser with a slab geometry

et al. 1996

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“…Such long laser pulse durations are more interesting for reactor lasers, and they also may be useful for industry lasers, where the optimal radiation pulse duration for the same technological processes is about 0.1-1 ms. Therefore, over the last few years intense research has been done on Xe-laser oscillation with millisecond e-beam pumping (Koval' et al 1986;Vintizenko etal 1986;Derzhiev etal 1987d;Patterson etal 1989;Branon etal 1990;Bugaev et al 1990;Patterson et al 1990aPatterson et al , 1990bPatterson & Samlin 1993;Perkins 1993). ArXe + + e = Xe"(5d) + Ar (Newman et al 1975;Basov et al 1982Basov et al , 1984 Xe£ + e = Xe**(5d) + Xe (Lewton et al 1979;Voinov et al 1989) Ar* + Xe = Xe"(5d) + Ar (Helnick et al 1975;Losev & Tarasenko 1980;Klopovskii et al 1989) Xe + e = Xe**(5d) + e (Lisitsin & Sorokin 1981) Xe* + e = Xe"(5d) + e (Newman et al 1975;Klopovskii et al 1989) Ar| + Xe = Xe"(5d) + 2Ar (Lewton et al 1979) Xe + + 2e = Xe"(5d) + e (Deese & Hassan 1978) Setups similar to those described above were used in the experiments.…”

Section: Millisecond-pulse-duration E-beam Pumpingmentioning

confidence: 96%

“…The explanation of the effect the changing the output laser spectrum with helium additions in an Ar-Xe mixture was made nearly simultaneously by a few groups (Alford 1990;Suda et al 1990;Dudin et al 1991a;Skakun etal. 1991).…”

Section: Xe-laser Oscillation In Mixtures With Various Buffer Gasesmentioning

confidence: 98%

“…In the optimal excitation regime, under microsecond e-beam pumping, helium additions to an Ar-Xe mixture resulted in decreasing output energy and a single-line oscillation using a selective resonator (Suda et al 1990). The output radiation energy at A = 1.73 fim was increased by a factor of ten of its original value by adding 800 Torr of He to an Ar:Xe = 2269 Torr: 11.4 Torr mixture, but at the same time the laser energy at A = 2.03 fim increased up to one-half of the primary value of the energy at A = 1.73 fim.…”

Section: Xe-laser Oscillation In Mixtures With Various Buffer Gasesmentioning

confidence: 98%

“…Let us discuss some more interesting experimental results, obtained with long (0.1-1 ms) pulse durations of electron beam excitation. Laser oscillations at A = 1.73 and 2.03 /xm Xeatom transitions were investigated using an e-beam accelerator with a planar diode (Koval' et al 1986;Vintizenko et al 1986). E-beam current densities and laser pulse oscillograms for various pumping pulse durations are shown in figure 14.…”

Section: Millisecond-pulse-duration E-beam Pumpingmentioning

confidence: 99%

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Simulation of NPL in experiments with e-beam pumping

Fedenev¹,

Тарасенко²

1998

Laser Part. Beams

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The main goals of this review article are to show, on the basis of the results accumulated in this field, achievements in simulating the processes in nuclear pumped laser (NPL) active media by experiments on e-beam pumping, and to give a number of characteristic experimental examples, when this simulation has improved understanding of the inversion population processes in NPL active media (Cd+, Xe-lasers) or generated interest in experiments with fission fragments excitation (Ne-laser). In the case of the population of laser operation levels in non-equilibrium recombinating plasma, one can say with sufficient accuracy that the inversion population mechanism is identical for both excitation types.

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Optimisation of neutral rare gas laser continuous wave power in the mid infra-red

Grant

1995

Infrared Physics & Technology

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Effects of helium addition to Ar-Xe mixtures in high-pressure atomic-transition xenon lasers

Cited by 8 publications

References 13 publications

Spectral investigation of cw rf-pumped atomic Xe laser with a slab geometry

Spectral investigation of cw rf-pumped atomic Xe laser with a slab geometry

Simulation of NPL in experiments with e-beam pumping

Optimisation of neutral rare gas laser continuous wave power in the mid infra-red

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