CN212303607U - Laser side shaft ion excitation device - Google Patents
Laser side shaft ion excitation device Download PDFInfo
- Publication number
- CN212303607U CN212303607U CN202020157818.5U CN202020157818U CN212303607U CN 212303607 U CN212303607 U CN 212303607U CN 202020157818 U CN202020157818 U CN 202020157818U CN 212303607 U CN212303607 U CN 212303607U
- Authority
- CN
- China
- Prior art keywords
- laser
- ion
- transmission channel
- excitation
- excitation device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Lasers (AREA)
Abstract
The utility model discloses a laser side axle ion excitation device, including laser transmission passageway and ion transmission passageway, the contained angle has between laser transmission passageway and the ion transmission passageway, and the laser focus beam waist of laser transmission passageway is aroused the carrier position with the ion and is adjustable, forms non-uniform distribution laser excitation energy in beam waist department, and the vision is kept watch on and has the contained angle between passageway and the ion transmission passageway equally, and the ion transmission passageway is aroused the carrier with the ion and is perpendicular. The laser side shaft ion excitation device is reasonable in structure arrangement, the laser transmission channel, the ion transmission channel and the visual monitoring channel are mutually independent, and the visual monitoring channel and the laser transmission channel surround the ion transmission channel without influencing ion transmission; by adjusting the beam waist position of the laser spot, non-uniform excitation energy with an included angle can be formed, the abundance of ions with high molecular weight and low molecular weight in a mass range can be adjusted, and effective resolution is further improved.
Description
The technical field is as follows:
the utility model relates to a mass spectrometry field specifically says so a laser side axle ion excitation device.
Background art:
the existing matrix-assisted laser desorption ionization time-of-flight mass spectrometry equipment is complex in structure, laser excitation adjustment difficulty is high, ion excitation is usually bias excitation, a focus is too concentrated during excitation, excitation energy can be improved, differential excitation energy cannot be provided according to molecular weight during excitation, and ionization efficiency is not ideal.
The utility model has the following contents:
the utility model aims to solve the technical problem that a laser side shaft ion excitation device that the structure sets up rationally is provided, and this excitation device can provide the differentiation according to the molecular weight and arouse energy, and ionization efficiency is better.
The technical solution of the utility model is that, a laser side axle ion excitation device is provided, including laser transmission passageway and ion transmission passageway, its characterized in that: an included angle is formed between the laser transmission channel and the ion transmission channel, the laser focusing beam waist of the laser transmission channel and the ion excitation carrier are adjustable in position, non-uniformly distributed laser excitation energy is formed at the laser beam waist, the visual monitoring channel and the ion transmission channel are also provided with the included angle, and the ion transmission channel is perpendicular to the ion excitation carrier.
Compared with the prior art after the structure more than adopting, the utility model has the advantages of it is following: the utility model has reasonable structure, the laser transmission channel, the ion transmission channel and the visual monitoring channel are mutually independent, and the visual monitoring channel and the laser transmission channel surround the ion transmission channel without influencing ion transmission; by adjusting the beam waist position of the laser spot, non-uniform excitation energy with an included angle can be formed, the abundance of ions with high molecular weight and low molecular weight in a mass range can be adjusted, and effective resolution is further improved.
Preferably, the laser transmission channel includes, but is not limited to, a laser, a focusing lens, a mirror; the ion transmission channel comprises but is not limited to a variable curved surface ion lens and an ion filter screen; visual surveillance channels include, but are not limited to, optical cameras, light sources. The ion transmission channel further comprises an ion detection device, and the ion detection device is of an existing structure.
Preferably, the distance between the laser focusing beam waist of the laser transmission channel and the ion excitation carrier is adjustable, and the adjusting distance is not less than the diameter of the beam waist.
Preferably, the laser transmission channel and the visual monitoring channel are focused on the ion excitation carrier excitation surface together by taking the ion transmission channel as the center.
Preferably, the laser transmission channel and the ion transmission channel form an included angle of 15-75 degrees.
Preferably, the laser transmission channel and the ion transmission channel form an included angle of 45 degrees.
Preferably, the visual monitoring channel and the ion transmission channel form an included angle of 15-75 degrees.
Preferably, the visual monitoring channel and the ion transmission channel form an included angle of 45 degrees.
Preferably, the laser has a wavelength of 270nm to 470 nm.
Furthermore, the energy of the non-uniformly distributed laser focusing laser gradually transits from one side to the opposite side, and the size of the focusing spot is 10-500 μm.
Description of the drawings:
fig. 1 is a schematic view of the present invention.
Fig. 2 is a schematic diagram of the focusing energy of the present invention.
Fig. 3 is a schematic view of the ion intensity of the present invention.
The specific implementation mode is as follows:
the invention will be further explained with reference to the drawings and the detailed description below:
as shown in fig. 1-3, a laser side shaft ion excitation device includes a laser transmission channel and an ion transmission channel, an included angle is formed between the laser transmission channel and the ion transmission channel, a laser focusing beam waist of the laser transmission channel and an ion excitation carrier are adjustable in position, a non-uniformly distributed laser excitation energy is formed at the beam waist, an included angle is also formed between a visual monitoring channel and the ion transmission channel, the ion transmission channel is perpendicular to the ion excitation carrier, wherein the laser transmission channel includes but is not limited to a laser 1, a focusing lens 2, and a reflector 3, and the laser 1, the focusing lens 2, and the reflector 3 are sequentially arranged along the laser transmission channel; the ion transmission channel comprises but is not limited to a variable curved surface ion lens 6 and an ion filter screen 7; the visual surveillance channel includes, but is not limited to, an optical camera 5, a light source. The laser 1 is used as a laser light source, the ion transmission channel further comprises an ion detection device, and the ion detection device is of an existing structure and is not described in detail.
Preferably, the distance between the laser focusing beam waist of the laser transmission channel and the ion excitation carrier is adjustable, and the adjusting distance is not less than the diameter of the beam waist. And the variable curved surface ion lens is an electro-variable curved surface lens, the curvature of the curved surface can be adjusted by adjusting and controlling electrical parameters, and the axis of the variable curved surface ion lens is concentric with the ion transmission channel. The laser transmission channel and the visual monitoring channel are focused on the ion excitation carrier excitation surface together by taking the ion transmission channel as the center.
Preferably, in this embodiment, the laser transmission channel and the ion transmission channel have an included angle of 45 degrees, and the visual monitoring channel and the ion transmission channel have an included angle of 45 degrees. In addition, the wavelength of the laser is 337nm or 355nm ultraviolet wavelength laser. The energy of the non-uniformly distributed laser focusing laser gradually transits from one side to the opposite side, and the size of a focusing spot is 10-500 mu m.
Through the structure, the whole structure is reasonable and simple to set, the efficiency of ion excitation in the mass range is favorably balanced, the high mass-to-charge ratio resolution ratio is greatly improved, and the sensitivity and the resolution ratio can both achieve the expected effect
The laser transmission channel, the ion transmission channel and the visual monitoring channel are mutually independent, and the visual monitoring channel and the laser transmission channel surround the ion transmission channel without influencing ion transmission. The efficiency of ion excitation in the mass range is favorably balanced, the high mass-to-charge ratio resolution is greatly improved, and the sensitivity and the resolution can achieve the expected effect.
By adjusting the beam waist position of the laser spot, non-uniform excitation energy with an included angle can be formed, the abundance of ions with high molecular weight and low molecular weight in a mass range can be adjusted, and effective resolution is further improved. The excitation energy of the large molecules and the small molecules is different during ion excitation, when the laser intensity is constant and the mass range is wide, the distribution of the excitation energy is adjusted by adjusting the excitation angle and the focus point, and the laser can adapt to the mass range of 100 plus 1000000 molecular weights; when the molecular weight range is narrow, such as 1000-; when the mass range is larger and the mass-to-charge ratio is higher, such as 10000-; when the mass range is larger and the mass-to-charge ratio is lower than 100-100000, the focusing mode 1 in fig. 2 can be selected, so that the excitation efficiency of lower molecular weight is lower and the excitation of high molecular weight is higher; the laser energy which is non-uniformly distributed on the excitation point can effectively balance the difference between the excitation energy required by the molecular weight and the excitation quantity of the high and low molecular weights in the mass range, the beneficial effect is shown as a dotted line in figure 3, when the laser on the excitation point is uniformly distributed, the excitation efficiency of the ions is reduced along with the increase of the molecular weight, and the ion intensity can be basically straight in the mass range through the adjustment of the laser energy of the excitation point, which is shown as a solid line in figure 3. When the ion abundance curve is basically uniform, the requirement of sensitivity can be met by mentioning the laser intensity or the amplification factor of the ion detector. Meanwhile, the requirements of resolution and sensitivity are considered.
Claims (10)
1. The utility model provides a laser side axle ion excitation device, includes laser transmission passageway and ion transmission passageway, its characterized in that: an included angle is formed between the laser transmission channel and the ion transmission channel, the laser focusing beam waist of the laser transmission channel and the ion excitation carrier are adjustable in position, non-uniformly distributed laser excitation energy is formed at the laser beam waist, the visual monitoring channel and the ion transmission channel are also provided with the included angle, and the ion transmission channel is perpendicular to the ion excitation carrier.
2. The laser side shaft ion excitation device of claim 1, wherein: the laser transmission channel comprises a laser, a focusing lens and a reflector; the ion transmission channel comprises a variable curved surface ion lens and an ion filter screen; the visual monitoring channel comprises an optical camera and a light source.
3. The laser side shaft ion excitation device of claim 1, wherein: the distance between the laser beam waist of the laser transmission channel and the ion excitation carrier is adjustable, and the adjusting distance is not less than the diameter of the laser beam waist.
4. The laser side shaft ion excitation device of claim 1, wherein: the laser transmission channel and the visual monitoring channel are focused on the ion excitation carrier excitation surface together by taking the ion transmission channel as the center.
5. The laser side shaft ion excitation device of claim 1, wherein: the laser transmission channel and the ion transmission channel form an included angle of 15-75 degrees.
6. The laser side shaft ion excitation device of claim 5, wherein: the laser transmission channel and the ion transmission channel form an included angle of 45 degrees.
7. The laser side shaft ion excitation device of claim 1, wherein: the visual monitoring channel and the ion transmission channel form an included angle of 15-75 degrees.
8. The laser side shaft ion excitation device of claim 7, wherein: the visual monitoring channel and the ion transmission channel form an included angle of 45 degrees.
9. The laser side shaft ion excitation device of claim 1, wherein: the wavelength of the laser is 270nm to 470 nm.
10. The laser side shaft ion excitation device of claim 1, wherein: the non-uniformly distributed laser excitation energy is gradually transited from one side to the opposite side, and the size of a focusing spot is 10-500 mu m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020157818.5U CN212303607U (en) | 2020-02-10 | 2020-02-10 | Laser side shaft ion excitation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020157818.5U CN212303607U (en) | 2020-02-10 | 2020-02-10 | Laser side shaft ion excitation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212303607U true CN212303607U (en) | 2021-01-05 |
Family
ID=73958480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020157818.5U Active CN212303607U (en) | 2020-02-10 | 2020-02-10 | Laser side shaft ion excitation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212303607U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111161997A (en) * | 2020-02-10 | 2020-05-15 | 浙江迪谱诊断技术有限公司 | Laser side shaft ion excitation device |
-
2020
- 2020-02-10 CN CN202020157818.5U patent/CN212303607U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111161997A (en) * | 2020-02-10 | 2020-05-15 | 浙江迪谱诊断技术有限公司 | Laser side shaft ion excitation device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2019511819A5 (en) | ||
| US8016439B2 (en) | Solar simulator | |
| US6707031B1 (en) | Laser optical bench for laser desorption ion sources and method of use thereof | |
| CN212303607U (en) | Laser side shaft ion excitation device | |
| CN104204655A (en) | Irradiation light quantity control device and solar simulator | |
| CN202814877U (en) | Fluorescence collecting device | |
| CN208297848U (en) | A kind of ring-like focal beam system | |
| US20150155152A1 (en) | Mass spectrometry apparatus | |
| CN207020349U (en) | A kind of optical coupler for high power semiconductor laser | |
| CN209706955U (en) | Near space background spectrum radiation measurement assembly based on aerostatics | |
| CN111161997A (en) | Laser side shaft ion excitation device | |
| CN104143495B (en) | A kind of automatic control system of mass spectrograph core component | |
| JP2012108488A5 (en) | ||
| US20220157591A1 (en) | Laser coaxial ion excitation device | |
| CN107611755B (en) | System and method for generating high-intensity terahertz waves by double plasmas with adjustable spacing | |
| CN106847662A (en) | Based on the ultrafast electric diffraction apparatus that laser plasma drives | |
| CN110942972A (en) | Mass spectrometer and optical system thereof | |
| Kon et al. | Geometrical optimization of an ellipsoidal plasma mirror toward tight focusing of ultra-intense laser pulse | |
| CN103295872A (en) | Compound ion source device and mass spectrometer | |
| CN208861932U (en) | Mass spectrograph and its optical system | |
| CN202291843U (en) | Laser welding machine provided with dynamic diaphragm device | |
| JPH08148116A (en) | Micro-laser flight time type mass spectrometer | |
| CN212625480U (en) | Laser coaxial ion excitation device | |
| US9383080B1 (en) | Wide field of view concentrator | |
| CN207234145U (en) | The system that double plasma adjustable in pitch produces high intensity THz wave |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |