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1. Upconversion luminescence properties of Yb3+ and Tm3+ codoped amorphous ?uoride ZBLAN thin ?lm prepared by pulsed laser deposition | |||
He Chunfeng,qinguanshi,zhaodan,chuaixiaohong,wanglili,qinweiping | |||
Physics 23 July 2012 | |||
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Abstract:This paper reports on the spectroscopic properties and energy transfer analysis of Yb3+ and Tm3+ co-doped 55.98ZrF4-28BaF2-2.5LaF3-4AlF3-7NaF-2.5YbF3-0.02TmF3 amorphous ?uoride ?lm prepared by pulsed laser deposition. This glass thin ?lm has the potential application for integrated optical waveguide ampli?er and laser. Ultraviolet and visible up-conversion emissions were observed under infrared excitation at 980 nm. In comparison with that of the target, the upconversion emissions are enhanced greatly. The possible mechanism of the emissions was given. | |||
TO cite this article:He Chunfeng,qinguanshi,zhaodan, et al. Upconversion luminescence properties of Yb3+ and Tm3+ codoped amorphous ?uoride ZBLAN thin ?lm prepared by pulsed laser deposition[OL].[23 July 2012] http://en.paper.edu.cn/en_releasepaper/content/4485487 |
2. Tera-Hertz Wave Amplification vis Relativistic Electrons Pumped by a Planar Electrostatic System | |||
Zhang Shichang | |||
Physics 19 June 2009 | |||
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Abstract:A mechanism of Tera-Hertz wave amplification is proposed, where a planar electrostatic pumps the kinetic energy of relativistic electrons to the wave. The planar electrostatic system is formed by two parallel metallic plates, where the super-plate is corrugated with sinusoidal ripples and connected to a negative voltage while the sub-plate is smooth and grounded. The relativistic Doppler up-shift frequency and gain of the wave are derived in detail. | |||
TO cite this article:Zhang Shichang . Tera-Hertz Wave Amplification vis Relativistic Electrons Pumped by a Planar Electrostatic System[OL].[19 June 2009] http://en.paper.edu.cn/en_releasepaper/content/33286 |
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