Internal Mirror Type Hollow Cathode He Cd II White Light Laser
نویسندگان
چکیده
منابع مشابه
Stabilization of internal-mirror He-Ne lasers.
Simultaneous frequency and amplitude stabilization of a commercial internal-mirror He-Ne laser by a new simple method is reported. In this method, the back beam intensity of one polarization of the orthogonally polarized modes is fed back as a heater current to control the cavity length of the laser. The relative frequency stability and amplitude stability achieved are, respectively, +2.5 X 10-...
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Power output fluctuations at frequencies in the kHz to MHz range are commonly observed in gas lasers. In case of the cataphoretic He-Cd laser violent fluctuations of the order 50% peak to peak can occur [1]. This noise appears to be different in nature from e.g. He-Ne laser noise [2]. Its origin was attributed to neutral cadmium vapor density fluctuations [3] and to the coupling of Penning elec...
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A theory for the single-channel hollow cathode (SCHC) that includes the relevant physical processes and predicts the operating parameters is presented. A SCHC consists of a cylindrical channel approximately ten diameters in length through which a working gas (taken as lithium vapor here) flows and exits as a plasma. A high current (1-100 A) is conducted into the channel by the plasma and to the...
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An experimental investigation of the operating characteristics of 3.2 mm diameter orificed hollow cathodes was conducted to examine low-current and low flow rate operation. Cathode power was minimized with low orifice aspect ratio and the use of an enclosed keeper. Cathode flow rate requirements were proportional to orifice diameter and the inverse of the orifice length. Cathode temperature pro...
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The low pressure glow discharges considered in this paper are the hollow cathode (Paschen), and the flat cathode (Grimm). Both discharges have similar voltage—current characteristics which are responsible for their radiation stability. The analytical sample is supplied to the discharge through a sputtering mechanism which provides a stable and non-selective source of particles. Some of the fund...
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ژورنال
عنوان ژورنال: The Review of Laser Engineering
سال: 1986
ISSN: 0387-0200,1349-6603
DOI: 10.2184/lsj.14.917