North Night Vision Technology Corporation Ltd. Nanjing Branch

Nanjing, China

North Night Vision Technology Corporation Ltd. Nanjing Branch

Nanjing, China
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Pan J.-S.,Changchun University of Science and Technology | Pan J.-S.,North Night Vision Technology Corporation Ltd. Nanjing Branch | Qi L.,Changchun University of Science and Technology | Xiao H.-L.,Changchun University of Science and Technology | And 4 more authors.
Wuli Xuebao/Acta Physica Sinica | Year: 2012

The streak cameras which with an internal or external microchannel plate (MCP) image amplification has a significant enhancement on the detect signal threshold, but also induces the saturation effect of MCP to limit the dynamic range of streak camera. The saturation effect of MCP is described through the channel multiplier model of a discrete resistance capacitance dynode chain, explaining that the input output linear range of MCP which in both the two amplification method is depend on the charge restored in the channels the contribution of compensate effect which comes from the bias current is very limited, even using a low restistance MCP in the external method streak camera, so the streak cameras with an internal and external MCP image amplification should have equivalent dynamic range, low resistance MCP only function if a rapid sequence shots is required, and MCP gain was set up properly is critical for the dynamic range of streak camera. © 2012 Chinese Physical Society.


Pan J.,Changchun University of Science and Technology | Pan J.,North Night Vision Technology Ltd. Corporation Nanjing Branch | Lu J.,Changchun University of Science and Technology | Li Y.,Beijing Institute of Technology | And 2 more authors.
Guangxue Xuebao/Acta Optica Sinica | Year: 2012

Gallium arsenic (GaAs) photocathode demonstrates an excellent quantum efficiency superior to multialkali photocathode. Because of an ion barrier film existed on the input face of microchannel plate (MCP), gen. 3 image intensifiers tubes (IIT), even the thin film gen. 3 IIT, have not shown evident advantage on the main parameters of singal-to-noise ratio and resolution under standard test condition over super gen. 2 IIT which updated simultaneously. The effective availability of photocathode quantum efficiency of IIT are evaluated by introducing a conception of MCP noise figure. Necessity of the realization of unfilmed gen. 3 IIT is emphasized. The problem remains in the currently unfilmed MCP gen. 3 IIT are indicated. The methods to improve MCP endurance capability of electron scrubbing resistance degassing treatment and further reduction of the number of poison species which contain in MCP substrate are researched, while the feasibility and technology approach for high reliability and high performance unfilmed MCP gen. 3 IIT are pointed out.


Pan J.,North Night Vision Technology Corporation Ltd. Nanjing Branch | Pan J.,Changchun University of Science and Technology | Xu W.,North Night Vision Technology Corporation Ltd. Nanjing Branch | Zheng T.,Changchun University of Science and Technology | And 3 more authors.
Zhenkong Kexue yu Jishu Xuebao/Journal of Vacuum Science and Technology | Year: 2012

We addressed the fabrication of bulk conductive micro-channel plate(MCP) with a novel type of semi-conductive glass. Extending microchannel matrix to abulk conductive substrate was considered to be an effective approach to avoid the disturbance of ion feedback problem in MCP. The newly-developed semiconductive glass was made of a special composition of vanadium iron lead aluminum phosphate. A 25 mm diameter rimless MCP with 12 μm pore pitch, was fabricated in the same way that the reduced lead silicate glass MCP was fabricated, but without the hydrogen reduction processing. The measured results show a steady conductive current of several microamperes and a current gain of 102 were obtained when a 1 kV bias voltage applied.

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