CN102651532A - Method and system for generating frequency signal of laser and laser - Google Patents
Method and system for generating frequency signal of laser and laser Download PDFInfo
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Abstract
The invention is suitable for the field of optics, and provides a method and system for generating a frequency signal of a laser and the laser. The method comprises the following steps of: detecting the frequency of a laser frequency modulating signal of the laser; and if the detected frequency surpasses the normal working frequency of the laser, modulating the frequency of the laser frequency modulating signal of the laser to the normal working frequency of the laser. The method provided by the invention has the advantages of prolonging the service life of the laser and enhancing the processing effect of the laser.
Description
Technical field
The invention belongs to optical field, relate in particular to a kind of generation method, system and laser of frequency signal of laser.
Background technology
Fiber laser is used widely at optical communication field as light source; Along with high-power two appearance of protecting layer optical fiber laser, its application is expanded rapidly towards more wide fields such as laser processing, laser ranging, laser radar, laser artistic imaging, laser anti-counterfeit and biologic medicals.When fiber laser carries out laser processing; The frequency of the synchronizing signal of laser bright dipping has strict the qualification; The frequency of the synchronizing signal of laser is identical with laser frequency adjustment signal, and the frequency of existing laser frequency modulation signal possibly exceed the scope (promptly exceeding the laser normal working frequency) of laser regulation, possibly cause the energy storage and release disequilibrium of laser light source; So cause the also overshoot scope of frequency of the synchronizing signal of laser output; When the frequency overshoot scope of the synchronizing signal of laser output, will reduce the useful life of laser, and the laser processing effect also can reduce.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of generation method of frequency signal of laser; Be intended to solve the laser output in the method for the prior art synchronizing signal the frequency overshoot working range and the laser that influences that produces reduces useful life, reduce the problem of laser processing effect.
The embodiment of the invention is achieved in that the present invention provides a kind of
The embodiment of the invention compared with prior art; Beneficial effect is: whether the frequency of technical scheme detection laser frequency modulated signal of the present invention exceeds the normal working frequency of laser; As detecting normal working frequency greater than this laser, the frequency of laser frequency being adjusted signal is adjusted to the highest frequency of this normal working frequency, as detects the normal working frequency less than this laser; The frequency that laser frequency is adjusted signal is adjusted to the low-limit frequency of this normal working frequency; Make the frequency of laser always work in its normal range of operation,, increase the advantage of laser processing effect so it has the laser of raising physical life.
Description of drawings
Fig. 1 is the flow chart of generation method of the frequency signal of a kind of laser provided by the invention;
The laser frequency protection SECO sketch map that Fig. 2 provides for the embodiment of the invention one;
The complex programmable logic array structured flowchart that Fig. 3 provides for the embodiment of the invention one;
The flow chart of the generation method of the frequency signal of a kind of laser that Fig. 4 provides for the embodiment of the invention one;
The inner block diagram of realizing of the complex programmable logic array that Fig. 5 provides for the embodiment of the invention one;
The structure chart of the generation system of the frequency signal of a kind of laser that Fig. 6 provides for the embodiment of the invention two.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The present invention provides a kind of generation method of frequency signal of laser, and this method is as shown in Figure 1, comprises the steps:
The frequency of the laser frequency modulation signal of S11, detection laser;
S12, exceed the normal working frequency of this laser, with the normal working frequency of frequency modulation(FM) to the laser of the laser frequency modulation signal of this laser like detected frequency.
The method that realizes S12 specifically can for, exceed the ceiling value of normal working frequency like the frequency that detects, the laser frequency of laser is adjusted to this ceiling value; Be lower than the minimum limit value of the normal working frequency of this laser like detected frequency, the laser frequency of laser is adjusted to this minimum limit value.
The frequency of method provided by the invention frequency modulated signal of detection laser before triggering laser output laser; When the frequency that detects is not in the scope in the operating frequency of laser; The frequency of the frequency adjusted signal of laser is adjusted to the operating frequency range of laser; So this method makes the synchronizing signal of laser output all the time in the frequency range that allows, thereby improves the laser processing effect useful life of improving laser.
Embodiment one
Present embodiment provides a kind of generation method of frequency signal of laser; The technological scene that present embodiment is realized can for: laser frequency protection SECO sketch map is as shown in Figure 2 in the present embodiment; Wherein S0 is the frequency modulated signal pulse of laser; S1 is that its cycle is 2 times of S0, t2=2t1 through the pulse signal behind frequency division; S2 is the count pulse sequence that positive half period detects, and is responsible for by the counting of the positive half period of the frequency signal of frequency division, and its signal period t3 is the system clock cycle of input; S3 is the count pulse sequence that negative half-cycle detects, and is responsible for by the counting of the negative half-cycle of the frequency signal of frequency division.The method that present embodiment provides is accomplished by the complex programmable logic array in the laser (CPLD), and the signal diagram of CPLD is as shown in Figure 3, wherein; CPLD 31 is a CPLD; Dc power module 32 provides stable working power for CPLD, and high-frequency clock 33 is for CPLD31 provides clock signal of system, and FLASH34 is used for stored program; The flow chart of the method that present embodiment provides is as shown in Figure 4, comprises the steps:
S41, laser frequency modulation signal S0 is carried out frequency division handle and obtain the S1 signal;
S42, the positive half period (the t1 section among the S1) of S1 signal is carried out clock count, whether confirm in the scope of count threshold that according to count value the S0 signal is whether in the normal working frequency scope of laser;
The method that realizes S42 specifically can for: be lower than the minimum limit value of count threshold like count value, judge that the frequency of positive half period is higher than highest frequency, be higher than the ceiling value of count threshold, judge that the frequency of positive half period is lower than low-limit frequency like count value.
S43, the negative half-cycle (the t2-t1 section among the S1) of S1 signal is carried out clock count, whether confirm in the scope of count threshold that according to count value the S0 signal is whether in the normal range of operation of laser;
The concrete grammar of realization S43 can not given unnecessary details referring to the implementation method of S42 here.
S44, exceed count threshold, the frequency of laser frequency modulation signal is adjusted to normal working frequency like any count value in positive half period and the negative half-cycle.
The method that realizes S44 specifically can for: exceed the ceiling value of normal working frequency like the frequency that detects, the laser frequency of laser be adjusted to this ceiling value; Be lower than the minimum limit value of the normal working frequency of this laser like detected frequency, the laser frequency of laser is adjusted to this minimum limit value.
Need to prove above-mentioned count threshold=1/ normal working frequency/clock value.
With a real example method that present embodiment is realized is described below; Here suppose that the outside high-frequency clock input that clock module receives can be 1nS (t3) (1nS is 1GHz), and the frequency range of laser operate as normal can for: 10KHz～100KHz (is the cycle to be: 10～100uS); After signal carried out frequency division, positive half period or negative half-cycle promptly equaled the whole cycle of input signal so, are exactly the whole cycle of input signal after just the high level counting being finished, in like manner to the low level counting too.So in the time of 10～100uS with the signal of the 1G counting of making a return journey, count value is: 10000～100000.If it is that count value is greater than 100000 then think that frequency input signal has exceeded for frequency, exports the 10KHz frequency signal this moment and substitutes original input signal as output that input signal is lower than 10KHz; If input signal be higher than 100KHz be count value less than 10000 then think that frequency input signal has exceeded highest frequency, export the 100KHz frequency signal this moment and substitute original input signal as output.
The inner realization of the CPLD block diagram of realizing the present embodiment method is as shown in Figure 5.
In addition, need to prove that the clock pulse in the present embodiment is during to the positive half period of S1 or negative half-cycle counting; Be equivalent to the complete period counting to input signal S0, because S1 is to the signal behind frequency division of S0, the cycle of S1 is the twice of S0; So S1 half period counting is equivalent to the S0 complete period is counted; For detecting, always to count in the preceding half period, the later half cycle is carried out judgment processing to half period count value before whole; Can guarantee that like this pulse signal do not surveyed by omission; As do not carry out a frequency division and handle; Count like the preceding half period; The later half cycle is carried out judgment processing to count value, then can omission surveys the data of the half period of S0, and count threshold goes up or generate during lower boundary protection pulse train (export ceiling value frequency or lower limit frequency) when count value is overflowed; So circulation realizes the seamless protection to input signal, obtaining the not pulse signal of ultra scope of frequency, so that it has a laser physical life is long, improves the advantage of laser processing effect.
Embodiment two
Present embodiment provides a kind of generation system of frequency signal of laser, and this system is as shown in Figure 6, comprising:
Optional, frequency adjustment unit 62 specifically comprises:
Ceiling value output module 621 is used for exceeding in the frequency that detects the ceiling value of normal working frequency, and the laser frequency of laser is adjusted to this ceiling value;
Minimum limit value output module 622 is used for being lower than in detected frequency the minimum limit value of the normal working frequency of this laser, and the laser frequency of laser is adjusted to this minimum limit value.
Optional, frequency detecting unit 61 specifically comprises:
Optional, judge module 612 specifically comprises:
Positive half period detection sub-module 6121 is used for the positive half period of frequency division processing signals is carried out clock count;
Negative half-cycle detection sub-module 6122 is used for the negative half-cycle of frequency division processing signals is carried out clock count;
Wherein, count threshold=1/ normal working frequency/clock value.
The system that present embodiment provides can let laser always work in the normal frequency scope, so this system can improve the useful life of laser, improves the laser processing effect.
Embodiment three
Present embodiment provides a kind of electric energy meter, and this electric energy meter comprises the generation system of the frequency signal of the laser that embodiment two provides.
It should be noted that said system, each included unit is just divided according to function logic, but is not limited to above-mentioned division, as long as can realize function corresponding; In addition, the concrete title of each functional unit also just for the ease of mutual differentiation, is not limited to protection scope of the present invention.
In addition; One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to accomplish through program; Corresponding program can be stored in a kind of computer-readable recording medium; The above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.
In sum, technical scheme provided by the invention has the useful life of improving laser, improves the advantage of laser processing effect.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the generation method of the frequency signal of a laser is characterized in that, said method comprises the steps:
The frequency of the laser frequency modulation signal of detection laser;
Like the normal working frequency that exceeds this laser of detected frequency, with the normal working frequency of frequency modulation(FM) to this laser of the laser frequency modulation signal of this laser.
2. method according to claim 1 is characterized in that, like the normal working frequency that exceeds this laser of detected frequency, the step of the normal working frequency of frequency modulation(FM) to this laser of the laser frequency modulation signal of this laser is specifically comprised:
Exceed the ceiling value of normal working frequency like the frequency that detects, the laser frequency of laser is adjusted to this ceiling value;
Be lower than the minimum limit value of the normal working frequency of this laser like detected frequency, the laser frequency of laser is adjusted to this minimum limit value.
3. method according to claim 1 is characterized in that, the step of the frequency of the laser frequency modulation signal of said detection laser specifically comprises:
The laser frequency modulation signal is carried out a frequency division to be handled;
Positive half period and negative half-cycle to the frequency division processing signals carry out clock count, whether confirm in the scope of count threshold that according to count value the laser frequency modulation signal is whether in the normal working frequency scope of laser.
4. method according to claim 3 is characterized in that, said according to count value whether in the scope of count threshold, confirm the laser frequency modulation signal whether the step in the normal working frequency scope of laser specifically comprise:
Be lower than the minimum limit value of count threshold like count value any in positive half period and the negative half-cycle, the frequency of judging the laser frequency modulation signal exceeds the ceiling value of normal working frequency;
Be higher than the ceiling value of count threshold like count value any in positive half period and the negative half-cycle, the frequency of judging the laser frequency modulation signal is lower than the minimum limit value of the normal working frequency of this laser;
Wherein, count threshold=1/ normal working frequency/clock value.
5. the generation system of the frequency signal of a laser is characterized in that, said system:
Frequency detecting unit is used for the frequency of the laser frequency modulation signal of detection laser;
The frequency adjustment unit is used for the normal working frequency that exceeds this laser like detected frequency, with the normal working frequency of frequency modulation(FM) to this laser of the laser frequency modulation signal of this laser.
6. system according to claim 5 is characterized in that, the frequency adjustment unit specifically comprises:
Ceiling value output module is used for exceeding in the frequency that detects the ceiling value of normal working frequency, and the laser frequency of laser is adjusted to this ceiling value;
Minimum limit value output module is used for being lower than in detected frequency the minimum limit value of the normal working frequency of this laser, and the laser frequency of laser is adjusted to this minimum limit value.
7. system according to claim 5 is characterized in that, said frequency detecting unit specifically comprises:
Frequency division module is used for that the laser frequency modulation signal is carried out a frequency division and handles;
Judge module is used for the positive half period and the negative half-cycle of frequency division processing signals are carried out clock count, whether confirms in the scope of count threshold that according to count value the laser frequency modulation signal is whether in the normal working frequency scope of laser.
8. system according to claim 7 is characterized in that, said judge module specifically comprises:
The positive half period detection sub-module is used for the positive half period of frequency division processing signals is carried out clock count;
The negative half-cycle detection sub-module is used for the negative half-cycle of frequency division processing signals is carried out clock count;
Judge submodule, be used for being lower than in positive half period and any one count value of negative half-cycle the minimum limit value of count threshold, the frequency of judging the laser frequency modulation signal exceeds the ceiling value of normal working frequency;
Any one count value is higher than the ceiling value of count threshold in positive half period and negative half-cycle, and the frequency of judging the laser frequency modulation signal is lower than the minimum limit value of the normal working frequency of this laser;
Wherein, count threshold=1/ normal working frequency/clock value.
9. a laser is characterized in that, said laser comprises the generation system like the frequency signal of the arbitrary described laser of claim 5-8.
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| CN201110046274.0A CN102651532B (en) | 2011-02-25 | 2011-02-25 | Method and system for generating frequency signal of laser and laser |
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| CN201110046274.0A CN102651532B (en) | 2011-02-25 | 2011-02-25 | Method and system for generating frequency signal of laser and laser |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103606811A (en) * | 2013-12-11 | 2014-02-26 | 北京信息科技大学 | Pulse fiber laser driven power control system based on CPLD (Complex Programmable Logic Device) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5153888A (en) * | 1990-08-22 | 1992-10-06 | Yokogawa Electric Corporation | Optical laser frequency stabilizer |
| KR20010092670A (en) * | 2000-03-24 | 2001-10-26 | 윤종용 | Auto output control apparatus of laser diode |
| US20030021309A1 (en) * | 2001-06-19 | 2003-01-30 | Mattox Barry G. | Method for producing highly accurate frequency and FM of a laser |
| CN101604815A (en) * | 2009-06-26 | 2009-12-16 | 哈尔滨工业大学（威海） | The laser frequency stabiliz ation method of a kind of control impuls laser settling time |
| CN101764345A (en) * | 2009-12-22 | 2010-06-30 | 深圳市大族激光科技股份有限公司 | laser |
-
2011
- 2011-02-25 CN CN201110046274.0A patent/CN102651532B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5153888A (en) * | 1990-08-22 | 1992-10-06 | Yokogawa Electric Corporation | Optical laser frequency stabilizer |
| KR20010092670A (en) * | 2000-03-24 | 2001-10-26 | 윤종용 | Auto output control apparatus of laser diode |
| US20030021309A1 (en) * | 2001-06-19 | 2003-01-30 | Mattox Barry G. | Method for producing highly accurate frequency and FM of a laser |
| CN101604815A (en) * | 2009-06-26 | 2009-12-16 | 哈尔滨工业大学（威海） | The laser frequency stabiliz ation method of a kind of control impuls laser settling time |
| CN101764345A (en) * | 2009-12-22 | 2010-06-30 | 深圳市大族激光科技股份有限公司 | laser |
Non-Patent Citations (1)
| Title |
|---|
| 董磊，等: "基于1.6um甲烷气体吸收线的半导体激光器频率稳定性分析", 《光子学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103606811A (en) * | 2013-12-11 | 2014-02-26 | 北京信息科技大学 | Pulse fiber laser driven power control system based on CPLD (Complex Programmable Logic Device) |
| CN103606811B (en) * | 2013-12-11 | 2016-04-27 | 北京信息科技大学 | Based on the pulse optical fiber driving power control system of CPLD |
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