Installation and adjustment method of wide-spectrum high-resolution echelle grating monochromator

Abstract

The invention provides an installation and adjustment method of a wide-spectrum high-resolution echelle grating monochromator. The installation and adjustment method comprises the steps that: a pinhole assembly and a laser device are sequentially arranged; a light beam emitted by the laser is adjusted; a front-end lens cone assembly and a collimating lens assembly are installed; correction of installation errors is carried out; a shutter assembly is arranged between the front-end lens cone assembly and the collimating lens assembly; the laser beam is ensured to be coincide with a shutter center point; a prism assembly and an echelle grating assembly are installed; a rolling error of a prism is eliminated by using a target plate; a rotation angle of an echelle grating is adjusted, so that the brightest light spot is incident into the prism; an imaging mirror assembly, a rear-end cylindrical mirror assembly and a CCD camera assembly are installed, and diffraction light spots are refracted to the imaging mirror through the prism; reflection light spots of the imaging mirror completely coincide with a target small hole in the front end of the cylindrical mirror and then enter the CCD camera through the cylindrical mirror; an installation and adjustment light source is replaced with a standard mercury lamp, and final installation and adjustment is conducted on the imaging mirror. The installation and adjustment method has the advantages of few professional auxiliary equipment, low installation and adjustment cost, simple operation, few installation and adjustment time consumption, and easy application.

Description

technical field [0001] The invention belongs to the field of spectrum technology, in particular to a method for installing and adjusting a wide-spectrum high-resolution echelle grating monochromator Background technique [0002] Spectral analysis technology is to analyze the qualitative, quantitative and structural analysis of the detected substances by detecting the reflection, scattering and absorption spectral characteristics of the substances. It is widely used in various fields such as security inspection, national defense, astronomy, aviation, spaceflight, and extraterrestrial life detection. [0003] The spectrometer is the core spectroscopic module of the detection equipment or system applied by the spectral analysis technology. Traditional Rowland and C-T spectrometers often use gratings with dense lines or large imaging focal lengths to improve their spectral resolution, which makes the instruments costly, bulky, and limited in spectral range. The echelle spectro...

AI Technical Summary

Problems solved by technology

However, most of the adjustment methods require the use of multiple professional auxiliary adjustment equipment. The adjustment process is cumbersome and relies heavily on the experience of the installer.

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