Femtojoule level laser micro energy meter with optical system
An optical system and micro-energy technology, applied in the field of laser measurement, can solve the problem of not being able to measure energy less than 800fJ/cm2
Inactive Publication Date: 2010-11-10
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology
The purpose of the present invention is to solve the problem that the femto-joke laser micro-energy meter in the prior art cannot measure energy less than 800fJ / cm2, and proposes a femto-joke laser micro-energy meter with an optical system
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The invention relates to a femtojoule level laser micro energy meter, in particular to a femtojoule level laser micro energy meter with an optical system, and belongs to the technical field of laser measurement. The femtojoule level laser micro energy meter comprises the optical system, a detection system and a signal processing and display system, wherein the optical system consists of three parallel lenses which are coaxial; the arrangement order of the three parallel lenses is a convex lens, a convex lens and a concave lens; a detector is coaxial with the three lenses, and can move relatively; and the center of the detection surface of the detector is required to be positioned on a focus point of the system of the three lenses, and is used for receiving light transmitted from the optical system and performing optical energy measurement on a target. The femtojoule level laser micro energy meter can accurately measure laser energy between 2.2 and 5*10<5>fJ / cm<2>, and can be used indoors or outdoors.
Description
A femto-joke laser micro-energy meter with an optical system technical field The invention relates to a femtojoule-level laser micro-energy meter, in particular to a femto-joke-level laser micro-energy meter with an optical system, and belongs to the technical field of laser measurement. technical background In recent years, with the advent of laser guidance, laser ranging and other products, the detection of diffuse reflection echo energy of long-distance laser targets has also been put on the agenda, and its minimum value is several fJ / cm2. The femtojoule-level laser micro-energy meter that has been found so far is a product developed by the China Institute of Metrology in recent years. This product is composed of a detector, signal processing and display system. Its minimum measurable energy is 800fJ / cm2. The disadvantage is that it cannot measure energy less than 800fJ / cm2. According to the report of the National Institute of Standards, a system with a minimum energ...
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IPC IPC(8): G01J1/42G01J1/04
Inventor 王茜蒨彭中崔小虹林幼娜
Owner BEIJING INSTITUTE OF TECHNOLOGYGY