Semi-continuous oscillation of halide copper vapor laser

Eradication of angiolymphoid hyperplasia with eosinophilia by copper vapor laser.

A healthy 47-year-old white woman presented with 4 vascular-appearing plaques on the left upper part of the forehead (Figure 1A), which had been present for approximately 9 years. On physical examination, there was a 1.031.2-cm pink plaque with 3 similar-appearing papules above it measuring 0.4 to 0.8 cm. One lesion extended into the hairline. Two 3-mm punch biopsy specimens were obtained, whic...

Growth of GaN nanotubes by halide vapor phase epitaxy.

We have investigated low temperature growth of GaN nanostructures using halide vapor phase epitaxy on c-oriented Al(2)O(3) and Au coated Al(2)O(3) substrates. Depending on the III/V ratio and the growth temperature, the shape and density of the structures could be controlled. By increasing the GaCl partial pressure, the structure changed from dot-like to nanotubes. The nanotubes, which could be...

Does Laser Ablation Vapor Simulate Impact Vapor?

Introduction: Many laser experiments have been done to simulate hypervelocity impact vaporization [e.g., 15]. Laser simulation has a number of advantages. It can create high-temperature plumes with high repeatability and a high repetition cycle at a relatively low cost. Furthermore, because laser light can penetrate through a glass window (if chosen properly), the target material and vaporizati...

COPPEFv VAPOR LASER

Input/Output Power Scaling of a Compact (0.8 L) Kinetically Enhanced Copper-Vapor Laser

We report the performance of a kinetically enhanced copper-vapor laser of active dimensions 32-mm inner diameter by 1-m long as a function of the plasma tube thermal insulation. By reducing the insulation to levels much lower than typically used for conventional copper-vapor lasers, the input power for maximum steady-state output increased from 5.9 to 7.4 kW, whereas the laser wall-plug efficie...