CN200986469Y - Spectrometer for multi-spectral line laser - Google Patents
Spectrometer for multi-spectral line laser Download PDFInfo
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- CN200986469Y CN200986469Y CN 200620052821 CN200620052821U CN200986469Y CN 200986469 Y CN200986469 Y CN 200986469Y CN 200620052821 CN200620052821 CN 200620052821 CN 200620052821 U CN200620052821 U CN 200620052821U CN 200986469 Y CN200986469 Y CN 200986469Y
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- spectral line
- condensing unit
- expand device
- parallel beam
- spectrometer
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Abstract
The utility model discloses a compact low-cost spectrograph which is capable of detecting all of spectrum lines of multiline lasers of short emission time. The spectrograph used for multiline lasers comprises an enclosure, a beam expansion device, a dispersion device and a photospot device. An entrance port is provided on the enclosure. The beam expansion device is arranged on the end close to the entrance port. The dispersion unit is arranged on the side of an exit face of the beam expansion device. The photospot device is arranged on the side of the beam expansion device and the dispersion unit. A light detector is provided at a focus of spectral lines reflected from the photospot device.
Description
Technical field
The utility model relates to the optic analytical instrument field, relates in particular to the known multiline laser spectrometer of spectral line.
Background technology
In the multiline chemical laser, Power Spectrum Distribution is and laser output power, facular model light beam parameter arranged side by side, and be unique parameter that can reflect active medium microcosmic quantum attribute (level characteristic) and macroscopic statistics attribute (population differences on the different energy levels), by changing macroscopical attribute (temperature, mixing, proportioning, pressure) of laser medium, can change the Power Spectrum Distribution of laser instrument again.Spectral measurement is a kind of routine measurement means of multiline chemical laser.Spectral measurement, analysis to this multiline laser mainly realize by spectrometer.At present, at the spectrometer that can buy on the market, great majority should be called monochromator, it need could record each spectral line of laser instrument respectively, and can't measure all spectral lines simultaneously by mechanical scanning, for very short laser instrument of bright dipping time, it is also inapplicable.Fourier transform spectrometer, can be measured each spectral line simultaneously, but it costs an arm and a leg, and is mainly used in the measurement absorption spectra, rather than emission spectrum.In sum, also there is not to survey simultaneously at present the spectrometer of all spectral lines of multiline laser on the market.
The utility model content
The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art, and the spectrometer that a kind of volume is little, with low cost, can detect all spectral lines of multiline laser very short between the light time simultaneously is provided.
Multiline laser spectrometer of the present utility model, comprise housing, be installed in parallel beam expand device, dispersion means and beam condensing unit in the housing, described housing is provided with the entrance port, parallel beam expand device is installed in the end near the entrance port, dispersion means is installed in a side of the exit facet of parallel beam expand device, beam condensing unit is positioned at a side of parallel beam expand device and dispersion means, and each the spectral line focal position that is reflected to form by beam condensing unit is provided with photo-detector.
Described beam condensing unit is made up of one or more cylinder concave mirrors.
Described beam condensing unit is made up of two or more sphere concave mirrors.
Described photo-detector alternative arrangement is on the multilayer spectral line array that is reflected to form by beam condensing unit.
Described parallel beam expand device comprises concavees lens and convex lens, and concavees lens are located at the end near the entrance port, and convex lens are located at the end near dispersion means.
Multiline laser spectrometer of the present utility model owing to directly be provided with a plurality of photo-detectors on the spectral line that beam condensing unit reflects to form, has saved the scanister of existing spectrometer; Use an enough wide cylinder concave mirror to reflect to form an enough wide spectral line array, this wide range linear array is divided into many narrow spectral line arrays, or use the beam condensing unit that rearranges by a plurality of spheres or cylinder concave mirror to reflect to form many spectral line arrays, again the photo-detector dislocation is arranged on each bar spectral line array, obtain enough photo-detector arrangement space with this, measure every spectral line simultaneously, realize measuring fast, reduce the size of overall optical spectrometer; Adopt concavees lens and convex lens as parallel beam expand device, the distance between them is the focus difference of two lens, compares with the parallel beam expand device of forming with two convex lens, and parallel beam expand device of the present utility model takes up room littler.
Description of drawings
Fig. 1 is a vertical view of the present utility model;
Fig. 2 is a light channel structure synoptic diagram of the present utility model;
Fig. 3 is the linear pattern spectral line array of figure that embodiment 1 forms;
Fig. 4 is the focal spot type spectrum linear array figure that embodiment 2 forms.
Marginal data:
1, housing 2, parallel beam expand device
3, dispersion means 4, beam condensing unit
5, photo-detector 11, entrance port
21, concavees lens 22, convex lens
Embodiment
Below in conjunction with the HF laser instrument the utility model is described in further detail.
Embodiment 1: as shown in Figure 1, multiline laser spectrometer of the present utility model, comprise housing 1, be installed in parallel beam expand device 2, dispersion means 3 and beam condensing unit 4 in the housing 1, each optical element is fixed on the housing 1 by support, housing 1 is provided with entrance port 11, parallel beam expand device 2 is installed in the end near entrance port 11, dispersion means 3 is installed in a side of the exit facet of parallel beam expand device 2, beam condensing unit 4 is positioned at a side of parallel beam expand device 2 and dispersion means 3, and beam condensing unit 4 is a cylinder concave mirror.Light is divided into three layers through form line style spectral line array after the mirror reflection of cylinder concave reflection on casing 1 set arc platform 12 with this spectral line array, and photo-detector 5 alternative arrangement are on three layers of spectral line array.Adopt this kind stratified sampling, staggered measuring method of gathering can be obtained enough photo-detectors 5 arrangement space, measures every spectral line simultaneously, realizes measuring fast, and can reduce the size of overall optical spectrometer.Dispersion means 3 is a reflective diffraction gratings in the present embodiment.Parallel beam expand device 2 comprises concavees lens 21 and convex lens 22; concavees lens 21 are located at the end near entrance port 11; convex lens 22 are located at the end near dispersion means 3; light is through after expanding bundle; the power density that incides on the grating is reduced; promptly protected grating; increased measurable power bracket again; adopt concavees lens 21 and convex lens 22 as parallel beam expand device 2; distance between them is made as the focus difference of two lens; if the parallel beam expand device of forming with two convex lens 2, then the focal length that need be made as two lens of the distance between them with, so the parallel beam expand device 2 in the present embodiment takes up room littler.
Principle of work: as shown in Figure 2, the incident light that the HF laser instrument produces 11 enters spectrometer through the entrance port, behind the concavees lens 21 and convex lens 22 expansion bundles through parallel beam expand device 2, incide on the reflective diffraction gratings 31 with 20 ° incident angles, after the reflective diffraction gratings beam split, because the angle of diffraction difference of each spectral line that wavelength is different, each spectral line incides on the cylinder concave mirror along different directions respectively, be reflected again and be converged to linear pattern spectral line array, as shown in Figure 3, linear pattern spectral line array is divided into three layers.Because the wavelength of each spectral line of HF laser instrument is known, so the position of each spectral line is also fixed in light path of the present utility model, in every spectral line, select one deck to place photo-detector 5, make photo-detector 5 alternative arrangement on the multilayer spectral line that reflects to form by beam condensing unit 4, the position is the placement location of photo-detector 5 shown in circle among Fig. 3, during spectrometer work, a certain photo-detector 5 has detected the light input, the spectral line that the position correspondence of this photo-detector 5 just is described exists, and can measure this spectral line light intensity in real time over time.Adopt this kind stratified sampling, staggered measuring method of gathering can be obtained enough photo-detectors 5 arrangement space, measures every spectral line simultaneously, realizes measuring fast, and can reduce the size of overall optical spectrometer.
Embodiment 2: as shown in Figure 1, multiline laser spectrometer of the present utility model, comprise housing 1, be installed in parallel beam expand device 2, dispersion means 3 and beam condensing unit 4 in the housing 1, each optical element is fixed on the housing 1 by support, housing 1 is provided with entrance port 11, parallel beam expand device 2 is installed in the end near entrance port 11, dispersion means 3 is installed in a side of the exit facet of parallel beam expand device 2, beam condensing unit 4 is positioned at a side of parallel beam expand device 2 and dispersion means 3, and beam condensing unit 4 is made up of three sphere concave mirrors of putting side by side.Light is through forming three coke charge spot type spectrum linear arrays on casing 1 set arc platform 12 after the mirror reflection of sphere concave reflection, photo-detector 5 alternative arrangement are on three layers of spectral line array.Adopt this kind stratified sampling, staggered measuring method of gathering can be obtained enough photo-detectors 5 arrangement space, measures every spectral line simultaneously, realizes measuring fast, and can reduce the size of overall optical spectrometer.Dispersion means 3 is a reflective diffraction gratings in the present embodiment, and parallel beam expand device 2 comprises concavees lens 21 and convex lens 22, and concavees lens 21 are located at the end near entrance port 11, and convex lens 22 are located at the end near dispersion means 3.
Principle of work: as shown in Figure 2, the incident light that the HF laser instrument produces 11 enters spectrometer through the entrance port, behind the concavees lens 21 and convex lens 22 expansion bundles through parallel beam expand device 2, incide on the reflective diffraction gratings with 20 ° incident angles, after the reflective diffraction gratings beam split, because the angle of diffraction difference of each spectral line that wavelength is different, each spectral line incides on three three sphere concave mirrors putting side by side along different directions respectively, be reflected and be converged to as shown in Figure 4 three layers of identical focal spot type spectrum linear array, every corresponding three focal spots of spectral line, because the wavelength of each spectral line of HF laser instrument is known, so the position of each spectral line is also fixed in light path of the present utility model, three focal spots at every spectral line form placement photo-detector 5 in selection one place in the point, make photo-detector 5 alternative arrangement on the multilayer spectral line that is reflected to form by beam condensing unit 4, the placement location of photo-detector 5 is shown in circle among Fig. 4.During spectrometer work, a certain photo-detector 5 has detected the light input, just illustrates that the spectral line of the position correspondence of this photo-detector 5 exists, and can measure this spectral line light intensity in real time over time.Adopt this kind stratified sampling, staggered measuring method of gathering can be obtained enough photo-detectors 5 arrangement space, measures every spectral line simultaneously, realizes measuring fast, and can reduce the size of overall optical spectrometer.
Claims (6)
1, a kind of multiline laser spectrometer, comprise housing (1), be installed in parallel beam expand device (2), dispersion means (3) and beam condensing unit (4) in the housing (1), parallel beam expand device (2) is installed in the end that housing (1) is gone up set entrance port (11), dispersion means (3) is installed in a side of the exit facet of parallel beam expand device (2), beam condensing unit (4) is positioned at a side of parallel beam expand device (2) and dispersion means (3), it is characterized in that each the spectral line focal position that is reflected to form by beam condensing unit (4) is provided with photo-detector (5).
2,, it is characterized in that described beam condensing unit (4) is made up of one or more cylinder concave mirrors according to the described multiline laser spectrometer of claim 1.
3,, it is characterized in that described beam condensing unit (4) is made up of two or more sphere concave mirrors according to the described multiline laser spectrometer of claim 1.
4,, it is characterized in that described photo-detector (5) alternative arrangement is on the multilayer spectral line array that is reflected to form by beam condensing unit (4) according to claim 2 or 3 described multiline laser spectrometers.
5, according to each described multiline laser spectrometer of claim 1 to 3, it is characterized in that described parallel beam expand device (2) comprises concavees lens (21) and convex lens (22), concavees lens (21) are located at the end near entrance port (11), and convex lens (22) are located at the end near dispersion means (3).
6, according to the described multiline laser spectrometer of claim 4, it is characterized in that described parallel beam expand device (2) comprises concavees lens (21) and convex lens (22), concavees lens (21) are located at the end near entrance port (11), and convex lens (22) are located at the end near dispersion means (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620052821 CN200986469Y (en) | 2006-11-13 | 2006-11-13 | Spectrometer for multi-spectral line laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620052821 CN200986469Y (en) | 2006-11-13 | 2006-11-13 | Spectrometer for multi-spectral line laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200986469Y true CN200986469Y (en) | 2007-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620052821 Expired - Lifetime CN200986469Y (en) | 2006-11-13 | 2006-11-13 | Spectrometer for multi-spectral line laser |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197665A (en) * | 2015-04-29 | 2016-12-07 | 中国科学院苏州纳米技术与纳米仿生研究所 | Spectrum test device and method of testing thereof |
-
2006
- 2006-11-13 CN CN 200620052821 patent/CN200986469Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197665A (en) * | 2015-04-29 | 2016-12-07 | 中国科学院苏州纳米技术与纳米仿生研究所 | Spectrum test device and method of testing thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071205 |
|
| EXPY | Termination of patent right or utility model |