The comparison of theoretical and experimental results of measurements of absorbing properties of Au films of 10 nm thickness deposited on a polymer substrate in the frequency band 8-11.6 GHz electromagnetic radiation...The comparison of theoretical and experimental results of measurements of absorbing properties of Au films of 10 nm thickness deposited on a polymer substrate in the frequency band 8-11.6 GHz electromagnetic radiation are presented. The new configuration of Au thin film in a rectangular waveguide had been considered. An abnormally high level of absorption of electromagnetic radiation throughout the range of wavelengths was obtained. This is apparently due to the lack of galvanic contact between the film and waveguide.展开更多
A periodically poled lithium niobate （PPLN） optical parametric generator （OPG） pumped by a laser diode （LD）-pumped Q-switched Tm,Ho：GdVO4 laser operated at 2.048 μm with pump pulse of 25 ns and repetition rate...A periodically poled lithium niobate （PPLN） optical parametric generator （OPG） pumped by a laser diode （LD）-pumped Q-switched Tm,Ho：GdVO4 laser operated at 2.048 μm with pump pulse of 25 ns and repetition rate of 10 kHz is reported. A continuous tunable middle-infrared （mid-IR） spectrum of 3.88 - 4.34 μm is obtained by changing the crystal temperature from 50 to 124℃. When the incident pump power is 3 W, the total OPG output power is 95 mW, corresponding to optical conversion efficiency of 3.2%.展开更多
文摘The comparison of theoretical and experimental results of measurements of absorbing properties of Au films of 10 nm thickness deposited on a polymer substrate in the frequency band 8-11.6 GHz electromagnetic radiation are presented. The new configuration of Au thin film in a rectangular waveguide had been considered. An abnormally high level of absorption of electromagnetic radiation throughout the range of wavelengths was obtained. This is apparently due to the lack of galvanic contact between the film and waveguide.
基金the Scientific Research Foundation of Harbin Institute of Technology.
文摘A periodically poled lithium niobate （PPLN） optical parametric generator （OPG） pumped by a laser diode （LD）-pumped Q-switched Tm,Ho：GdVO4 laser operated at 2.048 μm with pump pulse of 25 ns and repetition rate of 10 kHz is reported. A continuous tunable middle-infrared （mid-IR） spectrum of 3.88 - 4.34 μm is obtained by changing the crystal temperature from 50 to 124℃. When the incident pump power is 3 W, the total OPG output power is 95 mW, corresponding to optical conversion efficiency of 3.2%.
