New continuous wave infrared Ar-Xe laser at intermediate gas pressures pumped by a transverse radio frequency discharge

Udalov, Yu.B.; Peters, Peter J.; Heeman‐Ilieva, M. B.; Ernst, Floris; Очкин, В. Н.; Witteman, W.J.

doi:10.1063/1.109939

Cited by 20 publications

(7 citation statements)

References 15 publications

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“…The intracavity radiation field is described by a complex scalar field of the form (1) where is the frequency and is the decay rate. In the free space regions, the slowly varying envelopes satisfy the parabolic equation (2) where /c.…”

Section: Numerical Methodologymentioning

confidence: 99%

“…T HE RECENT development of the RF-excited Ar-He-Xe laser has resulted in a substantial increase of the CW output power from relatively compact devices [1], [2] (watts compared to milliwatts of laser output power for dc excited systems). An output power of more than 5 W and an increase of the operational spectral range has been reported [3], [4].…”

Section: Transverse Optical Mode Patterns For Ani Introductionmentioning

confidence: 99%

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Transverse optical mode patterns for an RF excited Ar-He-Xe laser

Blok

Elkin

Кочетов

et al. 1999

IEEE J. Quantum Electron.

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Abstract-Transverse optical modes for an RF excited Ar-He-Xe laser are studied both experimentally and theoretically. A diffraction model for a waveguide with a nonsaturable gain and refractive index gradients placed between two plane mirrors is formulated. The effects of gain and diffraction index gradients and of diffraction in free space are evaluated for typical experimental conditions. A direct comparison between theoretical mode patterns and experimentally measured ones at distances of 17 and 114 cm from the output mirror demonstrated a satisfactory agreement for various laser wavelengths and gas mixture compositions.

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Section: Numerical Methodologymentioning

confidence: 99%

Section: Transverse Optical Mode Patterns For Ani Introductionmentioning

confidence: 99%

Transverse optical mode patterns for an RF excited Ar-He-Xe laser

Blok

Elkin

Кочетов

et al. 1999

IEEE J. Quantum Electron.

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“…It is very interesting that the 1.73 pm line is absent in this case again. It is seen then that the 2.65 pm line is much stronger than the 1.73 pm line which in a pulsed laser with an Ar-rich gas mixture at a low excitation level has about the same or higher intensity [4]. In our case the power input was ~215 W (~36 W/cm3).…”

Section: Experiments and Discussionmentioning

confidence: 93%

“…The generated laser spectrum was analysed with a monochromator (SPEX 1681) equipped with a 300 lines/mm grating. More details of the setup are given in previous papers [1,4]. The input power was varied from 80 to 400 W, the laser-gas pressure from 60 to 400 mbar and the rf excitation frequency was 112.5 MHz.…”

Section: Methodsmentioning

confidence: 99%

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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“…Even in very narrow capillaries of 1 mm diameter the maximum attainable gas density is still too low for a substantial increase in output power in the case of a dc discharge. Since discharge stability and homogeneity are in general better ensured with a radio frequency (RF) discharge than with a normal dc discharge we explored successfully RF excitation for this lasing gas system as a function of gas pressure (9). This technique has several benefits.…”

Section: Continuous Operation With Output Power In the Range Of Wattsmentioning

confidence: 98%

<title>High-power atomic xenon laser</title>

et al. 1995

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The high pressure atomic xenon laser is becoming the most promising light source in the wavelength region of a few microns. The merits are high efficiency (so far up to 8 percent), high output energies (15 J/liter at 9 bar), high continuous output power (more than 200 W/litre), no gas dissociation and thermal heating of the lower laser level. Compared with the well-known low pressure xenon laser the power performance is now roughly a factor thousand higher. The operation of the system, based on three-body-collisions, uses the metastable state of the xenon atom as the ground state so that in the recirculation of energy a high quantum efficiency is obtained. Furthermore the homogeneous line broadening caused by the high collision frequency has also a strong beneficial effect on the efficiency. However, the required intense homogeneous excitation of the gas medium at high density is from a technical point of view a great challenge. From our experimental and theoretical work we found that at optimum performance the input power must be 1 to 2.5 [KW cm3 atm 2j. We describe our results obtained with c-beam sustained and x-ray preionized systems delivering pulsed energies in the range of joules per litre. Furthermore we describe our recent results on continuous RF excited wave guide systems of about 37 cm length with output powers in the range of watts.Keywords: high atomic lasers, cw and pulsed 2-3 j.m lasers.

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New continuous wave infrared Ar-Xe laser at intermediate gas pressures pumped by a transverse radio frequency discharge

Cited by 20 publications

References 15 publications

Transverse optical mode patterns for an RF excited Ar-He-Xe laser

Transverse optical mode patterns for an RF excited Ar-He-Xe laser

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

<title>High-power atomic xenon laser</title>

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