Multi-slit grating spectrograph
A multi-slit and grating technology, applied in the field of spectral measurement, can solve problems such as inability to be directly applied, unable to measure multiple target time-resolved spectra at the same time, and achieve the effect of novel structure and easy realization.
Pending Publication Date: 2018-08-10
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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However, due to the design problem of the spectrometer, a set of "spectrometer + streak camera" cannot measure the time-resolved spectra of multiple targets at the same time, so it cannot be directly applied to some scenarios, or only multiple sets of "spectrometer + streak camera" can be used. design
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[0017] The present invention will be further described below in conjunction with embodiment and accompanying drawing.
[0018] A multi-slit grating spectrometer includes an imaging mirror 1, a grating 2, N slits 3, N collimating mirrors 4 and N-1 fiber optic panels 5, and the normal lines of the fiber optic panels 5 are parallel to each other. Wherein, the imaging mirror 1 adopts an off-axis spherical mirror; the collimating mirror 4 adopts a collimating toroidal mirror; the grating 2 adopts a planar grating; the optical fiber panel 5 is a 1:1 optical fiber panel for compensating imaging The distance ensures that each signal spectrum can be imaged on the same plane. Moreover, N is a positive integer greater than or equal to 2. It should be pointed out that N is preferably 2, which is easy to design the optical path and can more easily ensure that the two signal spectra will not overlap at the image plane, and the spectral image The inclination angles are the same, take the fo...
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The invention discloses a multi-slit grating spectrograph. The multi-slit grating spectrograph comprises an imaging mirror, a grating, N slits, N collimating mirrors and N-1 optical fiber panels, wherein normals of all the optical fiber panels are mutually parallel, and N is a positive integer larger than or equal to 2; all to-be-measured laser signals are emitted in from the slits corresponding to the to-be-measured laser signals, are collimated by the collimating mirrors corresponding to the slits to be emitted to the grating, and are diffracted on the grating to be focused into N pieces ofsignal light through the imaging mirror, one piece of signal light can be directly imaged on a streak camera, and other signal light is imaged on the streak camera through the corresponding optical fiber panels. According to the multi-slit grating spectrograph, the structure is novel, achievement is easy, multiple laser signals with same wave bands are separated in the spectrum scattering direction while the spectrum measurement function can be completed, as long as one streak camera is matched, and the function of simultaneously measuring multiple time-resolved spectrographs can be achieved.
Description
technical field [0001] The invention belongs to the technical field of spectrum measurement, and in particular relates to a multi-slit grating spectrometer. Background technique [0002] Time-resolved spectral measurement refers to the measurement of the evolution of the target spectrum over time, which requires the use of spectrometers and optical streak cameras. At this time, the cathode of the streak camera coincides with the image plane of the spectrometer, and the direction is parallel to the direction of spectrum dispersion. The final recorded image is the time-resolved spectrum, one dimension represents the spectrum, and the other dimension represents time. However, due to the design problem of the spectrometer, a set of "spectrometer + streak camera" cannot measure the time-resolved spectra of multiple targets at the same time, so it cannot be directly applied to some scenarios, or only multiple sets of "spectrometer + streak camera" can be used. design. It is urge...
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IPC IPC(8): G01J3/28
CPCG01J3/2823G01J3/2889
Inventor 查为懿徐涛魏惠月理玉龙刘祥明王峰彭晓世关赞洋刘永刚
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS