CN203224294U - Photon-counting detection apparatus based on Geiger-style avalanche diode - Google Patents
Photon-counting detection apparatus based on Geiger-style avalanche diode Download PDFInfo
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- CN203224294U CN203224294U CN 201320104655 CN201320104655U CN203224294U CN 203224294 U CN203224294 U CN 203224294U CN 201320104655 CN201320104655 CN 201320104655 CN 201320104655 U CN201320104655 U CN 201320104655U CN 203224294 U CN203224294 U CN 203224294U
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- avalanche diode
- geiger
- photon
- style
- detection apparatus
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Abstract
The utility model relates to a photon-counting detection apparatus based on a Geiger-style avalanche diode. A high-voltage power supply supplies power for the photon-counting detection apparatus. Heat dissipation of the Geiger style avalanche diode is achieved by a refrigeration device. Measured weak optical signals are converted into electronic impulses by the Geiger-style avalanche diode. The electronic impulses are amplified by an amplifier. And then the impulse information is identified by a discriminator. The number of the impulses is counted by a counter and outputted to users. The photon-counting detection apparatus is advantageous by small size, low price, and high gain.
Description
Technical field
The utility model relates to a kind of pick-up unit, particularly a kind of Feebleness Light Signal Examining device.
Background technology
Photon counting is a kind of technology of Feebleness Light Signal Examining, and its principle is based on the corpuscular property (being single photon counting) of light and surveys, and namely each photoelectron pulse is noted one by one, how much represents the size of signal with the counting in the certain hour.Its typical way be with photomultiplier as photodetector, light signal is represented with the photoelectron form this technology is surveyed more effective based on the analog feature of light.When photon incides on the photodetector, the electronics that the photocathode of multiplier tube discharges moves to anode under the effect of pipe internal electric field, the photoelectron pulse appears in the pull-up resistor at anode, treated then light signal is extracted in digitized mode from noise.Based on the Photo Counting System of photomultiplier, have characteristics highly sensitive, that signal to noise ratio (S/N ratio) is good.Gain is low, volume big, problem of ultra-high price but also have.
Summary of the invention
The gain that existing photon counting pick-up unit based on photomultiplier exists is low, volume big, problem of ultra-high price in order to solve, the utility model provides a kind of photon counting pick-up unit based on the Geiger mode avalanche diode, this device can not only detect extremely weak one, and have that volume is little, low price, the high advantage of gain.
The technical solution of the utility model is: based on the photon counting pick-up unit of Geiger mode avalanche diode, by high-voltage power supply the Geiger mode avalanche diode is powered, and by refrigerating plant to the Geiger mode avalanche diode radiating, the Geiger mode avalanche diode converts the faint optical signal that records to electronic impulse, amplifier amplifies electronic pulse signal, differentiate by Discr. paired pulses information again, by the counters count umber of pulse, export to the user at last.
The beneficial effects of the utility model are: a kind of photon counting pick-up unit based on the Geiger mode avalanche diode, and adopt the Geiger mode avalanche diode as photodetector, have that volume is little, a low price, the high advantage of gain.
Description of drawings
Fig. 1 is a kind of photon counting pick-up unit structural representation based on the Geiger mode avalanche diode of the utility model.1. Geiger mode avalanche diodes among the figure, 2. high-voltage power supply, 3. refrigerating plant, 4. amplifier, 5. Discr., 6. counter.
Embodiment
Geiger mode avalanche diode (1) is powered by high-voltage power supply (2) as shown in Figure 1, refrigerating plant (3) dispels the heat to Geiger mode avalanche diode (1), Geiger mode avalanche diode (1) converts the faint optical signal that records to electronic impulse, amplifier (4) amplifies electronic pulse signal, differentiate by Discr. (5) pulse signals again, by counter (6) statistics umber of pulse, export to the user at last.
The operation steps of this device is:
1) open Geiger mode avalanche diode 1, and startup high-voltage power supply 2 is its power supply;
2) starting 3 pairs of Geiger mode avalanche diodes 1 of refrigerating plant dispels the heat;
3) Geiger mode avalanche diode 1 converts the faint optical signal that records to electronic impulse;
4) amplifier 4 amplifies electronic pulse signal;
5) Discr. 5 pulse signals are differentiated, remove and disturb and noise;
6) counter 6 statistics umber of pulses are exported to the user.
Claims (1)
1. photon counting pick-up unit based on the Geiger mode avalanche diode, it is characterized in that, the Geiger mode avalanche diode is powered by high-voltage power supply, refrigerating plant dispels the heat to the Geiger mode avalanche diode, the Geiger mode avalanche diode converts the faint optical signal that records to electronic impulse, and amplifier amplifies electronic pulse signal, differentiates by the Discr. pulse signals again, by the counters count umber of pulse, export to the user at last.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320104655 CN203224294U (en) | 2013-03-06 | 2013-03-06 | Photon-counting detection apparatus based on Geiger-style avalanche diode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320104655 CN203224294U (en) | 2013-03-06 | 2013-03-06 | Photon-counting detection apparatus based on Geiger-style avalanche diode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203224294U true CN203224294U (en) | 2013-10-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320104655 Expired - Fee Related CN203224294U (en) | 2013-03-06 | 2013-03-06 | Photon-counting detection apparatus based on Geiger-style avalanche diode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203224294U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737978A (en) * | 2016-05-06 | 2016-07-06 | 天津倍肯生物科技有限公司 | Photon counting device based on digitally adjustable MPPC gain |
| CN111121984A (en) * | 2019-12-17 | 2020-05-08 | 重庆邮电大学 | Avalanche photodetector capable of working in dual modes |
-
2013
- 2013-03-06 CN CN 201320104655 patent/CN203224294U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737978A (en) * | 2016-05-06 | 2016-07-06 | 天津倍肯生物科技有限公司 | Photon counting device based on digitally adjustable MPPC gain |
| CN105737978B (en) * | 2016-05-06 | 2017-12-19 | 天津倍肯生物科技有限公司 | A kind of photon counter that adjustment can be digitized based on MPPC gains |
| CN111121984A (en) * | 2019-12-17 | 2020-05-08 | 重庆邮电大学 | Avalanche photodetector capable of working in dual modes |
| CN111121984B (en) * | 2019-12-17 | 2021-09-24 | 重庆邮电大学 | Avalanche photodetector capable of working in dual modes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131002 Termination date: 20140306 |