EXPERIMENTAL INVESTIGATION OF GENERALIZED SELF-FILTERING UNSTABLE RESONATOR IN A LONGITUDINALLY EXCITED MOLECULAR NITROGEN LASER

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GHOREYSHI S.; FARAHBOD A.H.; HARIRI A.

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Journal Paper

Paper Information

Journal: JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY Year:2002 | Volume:- | Issue:25 Page(s): 0-0

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Title

EXPERIMENTAL INVESTIGATION OF GENERALIZED SELF-FILTERING UNSTABLE RESONATOR IN A LONGITUDINALLY EXCITED MOLECULAR NITROGEN LASER

Author(s)

GHOREYSHI S. | FARAHBOD A.H. | HARIRI A. | Issue Writer Certificate

Keywords

SELF-FILTERING UNSTABLE RESONATOR

MOLECULAR NITROGEN LASER

FIELD-LIMITING APERTURE

SELF-IMAGING CONDITION

Abstract

In this research work the application of the generalized SELF-FILTERING UNSTABLE RESONATOR (GSFUR) in a longitudinally excited MOLECULAR NITROGEN LASER has been investigated and compared with the plane-parallel resonator. In a typical design of magnification M=-5, the beam divergence of 0.33 mrad, and the brightness of 1.3×109 W/cm2.Sr have been obtained. For a plane-parallel resonator of equivalent length these figures are ~1mrad and 2.3×107 W/cm2.Sr respectively, where it is shown that in the GSFUR design there is a reduction in the beam divergence by a factor of 3 and enhancement in measured brightness by a factor of 56, as compared with the plane-parallel design. Using a field limiting aperture as an output coupler, the beam profile in the far-field and near-field were Gaussian and donut shape, respectively. A mathematical model based on the rate equations for the gain medium and equation for the electric circuit is introduced and the results are consistent with the experimental measurements.

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APA: Copy

GHOREYSHI, S., FARAHBOD, A.H., & HARIRI, A.. (2002). EXPERIMENTAL INVESTIGATION OF GENERALIZED SELF-FILTERING UNSTABLE RESONATOR IN A LONGITUDINALLY EXCITED MOLECULAR NITROGEN LASER . JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY, -(25), 0-0. SID. https://sid.ir/paper/535576/en

Vancouver: Copy

GHOREYSHI S., FARAHBOD A.H., HARIRI A.. EXPERIMENTAL INVESTIGATION OF GENERALIZED SELF-FILTERING UNSTABLE RESONATOR IN A LONGITUDINALLY EXCITED MOLECULAR NITROGEN LASER . JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY[Internet]. 2002;-(25):0-0. Available from: https://sid.ir/paper/535576/en

IEEE: Copy

S. GHOREYSHI, A.H. FARAHBOD, and A. HARIRI, “EXPERIMENTAL INVESTIGATION OF GENERALIZED SELF-FILTERING UNSTABLE RESONATOR IN A LONGITUDINALLY EXCITED MOLECULAR NITROGEN LASER ,” JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY, vol. -, no. 25, pp. 0–0, 2002, [Online]. Available: https://sid.ir/paper/535576/en

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