CN106451060A - Laser driving circuit - Google Patents
Laser driving circuit Download PDFInfo
- Publication number
- CN106451060A CN106451060A CN201610891136.5A CN201610891136A CN106451060A CN 106451060 A CN106451060 A CN 106451060A CN 201610891136 A CN201610891136 A CN 201610891136A CN 106451060 A CN106451060 A CN 106451060A
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- resistance
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- audion
- laser diode
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- 102100039435 C-X-C motif chemokine 17 Human genes 0.000 claims abstract description 10
- 101000889048 Homo sapiens C-X-C motif chemokine 17 Proteins 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000003287 optical effect Effects 0.000 claims description 5
- 239000007888 film coating Substances 0.000 claims description 2
- 238000009501 film coating Methods 0.000 claims description 2
- 230000001737 promoting effect Effects 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
- H01S3/131—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Semiconductor Lasers (AREA)
Abstract
The invention provides a laser driving circuit. The laser driving circuit comprises a power source VCC, a first laser diode LD1, a second laser diode LD2, a first triode T1, a second triode T2, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, an amplifier COP, a reference power source VCC1, a capacitor C1, a capacitor C2 and a capacitor C3.
Description
Technical field
The present invention relates to a kind of drive circuit of laser instrument, belong to photoelectron technical field.
Background technology
Existing laser instrument is in order to obtain stable exporting or in order to avoid the suddenly change of driving current or voltage is to sharp
Optical device produces and damages, and typically all can use stabilization control circuit, and having in the middle of control circuit greatly can be using feedback control
Algorithm processed, wherein feeds back or the direct feedback from electric current or voltage, or using photodiode PD to laser instrument
Output light is detected, then the light intensity value of detection is converted to the signal of telecommunication by PD, then by this signal of telecommunication feed back to control circuit or
Drive circuit, to realize the control of output with this or laser instrument is protected.Or but there is electricity in these methods
Line structure is complicated, the problem of high cost, or there is a problem of that feedback may be badly in need of a kind of not in time, for these problems
New drive circuit, this drive circuit can solve the problems, such as above, can play good protection simultaneously for device well
Effect.
Content of the invention
According to one embodiment of the invention, there is provided a kind of stable drive circuit for laser of frequency power output, including
Power supply VCC, power supply VCC are connected respectively to first laser diode LD1 and the anode of second laser diode LD2, first laser
The negative electrode of diode LD1 is connected to the colelctor electrode of the first audion T1, and the negative electrode of second laser diode LD2 is connected to the two or three
The colelctor electrode of pole pipe T2, the base stage of the first audion T1 is connected to control end, and the emitter stage of the first audion is connected to the first electricity
Resistance one end of R1 and one end of second resistance R2, the other end ground connection of first resistor R1, the other end of second resistance R2 is connected to
One end of 7th resistance R7 and the 4th resistance R4, the other end of the 7th resistance R7 is connected to positive pole and the 6th electricity of amplifier COP
One end of resistance R6, the other end of the 4th resistance R4 is connected to one end of the 5th resistance R5 and the 8th resistance R8 and is grounded, the 8th electricity
The other end of resistance R8 is connected to the negative pole of amplifier COP, and the other end of the outfan of amplifier COP and the 6th resistance R6 is equal
It is connected to one end of 3rd resistor R3, the other end of 3rd resistor R3 is connected to the base stage of the second audion T2, the second audion
The emitter stage of T2 is connected to the positive pole of reference power source VCC1, and the other end of the 5th resistance R5 is connected to the negative of reference power source VCC1
Pole, and electric capacity C1 and first laser diodes in parallel, electric capacity C2 and second laser diodes in parallel, electric capacity C3 and resistance R1 is simultaneously
Connection.
According to one embodiment of the invention, wherein first laser diode LD1 and second laser diode LD2 is except Cavity surface
Plated film different beyond remaining all same, wherein first laser diode LD1 and second laser diode LD2 all can launch to
The laser beam of few two wave bands, the wherein plated film of LD2 is only capable of the one of wave band of transmission, and the plated film of LD1 then can transmission simultaneously
All wave bands, and LD1 alignd with LD2 setting, namely the resonance intracavity of LD1 can be incided by the laser beam of LD2 outgoing, and
The outfan of LD1 is provided with dichroic mirror, this dichroic mirror reflects the laser of described LD2 outgoing and the swashing of other wavelength of transmission
Light.
According to one embodiment of the invention, by adjusting first resistor R1, the resistance of second resistance R2 and the 4th resistance R4
To adjust the cut-in voltage promoting second laser diode LD2.
Brief description
Accompanying drawing 1 is the electrical block diagram of the drive circuit for laser of the present invention；
Accompanying drawing 2 is the light channel structure schematic diagram of the laser instrument of the present invention.
Specific embodiment
The drive circuit for laser of the present invention will be described in detail on the basis of combining accompanying drawing below.It is wherein with quasiconductor
Illustrate as a example laser instrument, but the drive circuit of the present invention and light channel structure are equally applicable to gas and Solid State Laser
Semiconductor laser in device, namely embodiment can not be interpreted as limitation of the present invention.
The drive circuit for laser concrete composition of the present invention is as follows：
Including power supply VCC, power supply VCC is connected respectively to first laser diode LD1 and the sun of second laser diode LD2
Pole, the negative electrode of first laser diode LD1 is connected to the colelctor electrode of the first audion T1, the negative electrode of second laser diode LD2
It is connected to the colelctor electrode of the second audion T2, the base stage of the first audion T1 is connected to control end, the emitter stage of the first audion
It is connected to one end of first resistor R1 and one end of second resistance R2, the other end of first resistor R1 is grounded, second resistance R2
The other end is connected to one end of the 7th resistance R7 and the 4th resistance R4, and the other end of the 7th resistance R7 is connected to amplifier COP's
Positive pole and one end of the 6th resistance R6, the other end of the 4th resistance R4 is connected to one end of the 5th resistance R5 and the 8th resistance R8 simultaneously
Ground connection, the other end of the 8th resistance R8 is connected to the negative pole of amplifier COP, the outfan of amplifier COP and the 6th resistance R6
Other end be all connected to one end of 3rd resistor R3, the other end of 3rd resistor R3 is connected to the base of the second audion T2
Pole, the emitter stage of the second audion T2 is connected to the positive pole of reference power source VCC1, and the other end of the 5th resistance R5 is connected to ginseng
Examine the negative pole of power supply VCC1, and electric capacity C1 and first laser diodes in parallel, electric capacity C2 and second laser diodes in parallel, electricity
Hold C3 in parallel with resistance R1.
Control signal is added in the two ends of the first audion T1, LD1 has electric current flow through, and first resistor R1 produces pressure drop,
3rd electric capacity C3 is filter capacitor, and second resistance R2 and the 4th resistance R4 sample to the voltage at first resistor R1 two ends, lead to
Cross amplifier COP and 3rd resistor R3 be applied to the base stage of the second audion T2, when power supply VCC become greatly after or the first audion
T1 drive signal become big after, the electric current flowing through first laser diode LD1 becomes big, and the partial pressure in first resistor R1 becomes big,
When in the second audion T2 base stage, voltage is more than reference power source VCC1, the sampled signal meeting of second resistance R2 and the 4th resistance R4
Second audion T2 conducting is driven by amplifier COP and 3rd resistor R3, thus second laser diode LD2 sends laser.
So second laser two pole can be promoted to control by the value of the resistance of setting resistance R1, R2 and R4 and reference power source VCC1
The cut-in voltage of pipe LD2.
Remaining is equal in addition to cavity surface film coating is different for wherein first laser diode LD1 and second laser diode LD2
Identical.Wherein first laser diode LD1 and second laser diode LD2 all can launch the laser beam of at least two wave bands,
Wherein the plated film of LD2 is only capable of the one of wave band of transmission, and the plated film of LD1 then can all wave bands of transmission simultaneously.And LD1 with
LD2 alignment setting, namely the resonance intracavity of LD1, and the outfan setting in LD1 can be incided by the laser beam of LD2 outgoing
There is dichroic mirror, this dichroic mirror reflects the laser of the laser of described LD2 outgoing and other wavelength of transmission.
The operation principle of the present invention is described below：By the above-mentioned design on circuit, when the drive of first laser diode LD1
When galvanic electricity pressure becomes big suddenly, and it become greater to and exceed a certain value, LD2 will obtain driving current, and LD2 can only launch a ripple
The laser of section, and the laser of this wave band is in the range of the launch wavelength of LD1, when the laser light incident of this wave band is humorous to LD1
Shake intracavity when, the carrier in LD1 will be consumed so that participate in another one wave band exciting light carrier number become
Few, thus leading to the laser beam energy of another one wave band to diminish, and by LD2 in the mixed light of two wave bands being exported by LD1
The wave band launched is reflexed to other directions by dichroic mirror, so that obtained laser beam energy is constant or diminishes, thus
It is obtained in that stable output.
Claims (3)
1. a kind of drive circuit for laser, including power supply VCC, power supply VCC is connected respectively to first laser diode LD1 and second
The anode of laser diode LD 2, the negative electrode of first laser diode LD1 is connected to the colelctor electrode of the first audion T1, and second swashs
The negative electrode of optical diode LD2 is connected to the colelctor electrode of the second audion T2, and the base stage of the first audion T1 is connected to control end, the
The emitter stage of one audion is connected to one end of first resistor R1 and one end of second resistance R2, another termination of first resistor R1
Ground, the other end of second resistance R2 is connected to one end of the 7th resistance R7 and the 4th resistance R4, and the other end of the 7th resistance R7 is even
It is connected to the positive pole of amplifier COP and one end of the 6th resistance R6, the other end of the 4th resistance R4 is connected to the 5th resistance R5 and
One end of eight resistance R8 is simultaneously grounded, and the other end of the 8th resistance R8 is connected to the negative pole of amplifier COP, the output of amplifier COP
The other end of end and the 6th resistance R6 is all connected to one end of 3rd resistor R3, and the other end of 3rd resistor R3 is connected to the
The base stage of two audion T2, the emitter stage of the second audion T2 is connected to the positive pole of reference power source VCC1, and the 5th resistance R5's is another
Outer one end is connected to the negative pole of reference power source VCC1, and electric capacity C1 and first laser diodes in parallel, and electric capacity C2 and second swashs
Optical diode is in parallel, and electric capacity C3 is in parallel with resistance R1.
2. drive circuit for laser according to claim 1 it is characterised in that：Wherein first laser diode LD1 and
Dual-laser diode LD2 remaining all same in addition to cavity surface film coating is different, wherein first laser diode LD1 and second swashs
Optical diode LD2 all can launch the laser beam of at least two wave bands, and the wherein plated film of LD2 is only capable of the one of wave band of transmission,
The plated film of LD1 then can all wave bands of transmission simultaneously, and LD1 alignd with LD2 setting, namely can by the laser beam of LD2 outgoing
Incide the resonance intracavity of LD1, and the outfan in LD1 is provided with dichroic mirror, this dichroic mirror reflection described second swashs
The laser of optical diode LD2 outgoing and the laser of other wavelength of transmission.
3. drive circuit for laser according to claim 1 and 2 it is characterised in that：By adjust first resistor R1, second
The value of the resistance of resistance R2 and the 4th resistance R4 and reference power source VCC1 is adjusting the unlatching promoting second laser diode LD2
Voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610891136.5A CN106451060B (en) | 2016-10-13 | 2016-10-13 | Laser driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610891136.5A CN106451060B (en) | 2016-10-13 | 2016-10-13 | Laser driving circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106451060A true CN106451060A (en) | 2017-02-22 |
| CN106451060B CN106451060B (en) | 2023-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610891136.5A Active CN106451060B (en) | 2016-10-13 | 2016-10-13 | Laser driving circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106451060B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106877171A (en) * | 2017-04-17 | 2017-06-20 | 华北电力大学（保定） | A kind of power source of semiconductor laser circuit |
| CN107425916A (en) * | 2017-08-30 | 2017-12-01 | 合肥新文远信息技术有限公司 | A kind of simple laser communicator |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4504951A (en) * | 1982-06-01 | 1985-03-12 | American Laser Corporation | High speed switching power supply for a light controlled laser system |
| JPH10270784A (en) * | 1997-03-27 | 1998-10-09 | Nec Telecom Syst Ltd | Ld drive circuit |
| CN103825191A (en) * | 2014-03-21 | 2014-05-28 | 中国计量学院 | Narrow-pulse width high-peak value power pulse type semiconductor laser drive circuit |
| CN104201562A (en) * | 2014-08-13 | 2014-12-10 | 上海无线电设备研究所 | Semiconductor laser driving source with temperature compensation |
| CN205229458U (en) * | 2015-09-28 | 2016-05-11 | 于春雨 | Laser rangefinder radar |
| CN105811233A (en) * | 2016-04-20 | 2016-07-27 | 华北电力大学（保定） | Full-bridge inverter circuit laser driving circuit |
| CN205543671U (en) * | 2016-04-01 | 2016-08-31 | 华北电力大学（保定） | Soft switch laser drive circuit |
| CN206076725U (en) * | 2016-10-14 | 2017-04-05 | 华北电力大学（保定） | A kind of drive circuit for laser |
-
2016
- 2016-10-13 CN CN201610891136.5A patent/CN106451060B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4504951A (en) * | 1982-06-01 | 1985-03-12 | American Laser Corporation | High speed switching power supply for a light controlled laser system |
| JPH10270784A (en) * | 1997-03-27 | 1998-10-09 | Nec Telecom Syst Ltd | Ld drive circuit |
| CN103825191A (en) * | 2014-03-21 | 2014-05-28 | 中国计量学院 | Narrow-pulse width high-peak value power pulse type semiconductor laser drive circuit |
| CN104201562A (en) * | 2014-08-13 | 2014-12-10 | 上海无线电设备研究所 | Semiconductor laser driving source with temperature compensation |
| CN205229458U (en) * | 2015-09-28 | 2016-05-11 | 于春雨 | Laser rangefinder radar |
| CN205543671U (en) * | 2016-04-01 | 2016-08-31 | 华北电力大学（保定） | Soft switch laser drive circuit |
| CN105811233A (en) * | 2016-04-20 | 2016-07-27 | 华北电力大学（保定） | Full-bridge inverter circuit laser driving circuit |
| CN206076725U (en) * | 2016-10-14 | 2017-04-05 | 华北电力大学（保定） | A kind of drive circuit for laser |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106877171A (en) * | 2017-04-17 | 2017-06-20 | 华北电力大学（保定） | A kind of power source of semiconductor laser circuit |
| CN106877171B (en) * | 2017-04-17 | 2023-10-27 | 华北电力大学（保定） | Semiconductor laser power supply circuit |
| CN107425916A (en) * | 2017-08-30 | 2017-12-01 | 合肥新文远信息技术有限公司 | A kind of simple laser communicator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106451060B (en) | 2023-10-27 |
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