CN201408163Y - Device for measuring clock multiplier factor of nonlinear material - Google Patents
Device for measuring clock multiplier factor of nonlinear material Download PDFInfo
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- CN201408163Y CN201408163Y CN2009201204602U CN200920120460U CN201408163Y CN 201408163 Y CN201408163 Y CN 201408163Y CN 2009201204602 U CN2009201204602 U CN 2009201204602U CN 200920120460 U CN200920120460 U CN 200920120460U CN 201408163 Y CN201408163 Y CN 201408163Y
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Abstract
The utility model discloses a device for measuring the clock multiplier factor of nonlinear material. The device comprises a pumping laser source, a beam splitter, a spectrometer rotary table, a fundamental optical probe, a frequency doubling optical probe, a first fiber-spectrometer, a second fiber-spectrometer and a terminal device. A sampling groove is formed on the spectrometer rotary table; the fundamental optical probe and the first fiber-spectrometer are connected through a first fiber; the frequency doubling optical probe and the second fiber-spectrometer are connected through a secondfiber; and the first fiber-spectrometer and the second fiber-spectrometer are connected with the terminal device. The device has the advantages that the fundamental lights output by the pumping lasersource are divided into reflect fundamental lights and transmit fundamental lights through the half-transmitting and half-reflecting beam splitter, so that the fundamental lights are in two branches,thereby effectively reducing the influence to the frequency doubling effect caused by optical source fluctuation; the fiber-spectrometers are adopted to detect light intensity information, thereby realizing full-wave band light intensity information detection; and the fiber-spectrometers take environmental noises into consideration, thereby leading the final measuring results to be more reliableand accurate.
Description
Technical field
The utility model relates to a kind of frequency doubling technology of nonlinear material, especially relates to a kind of device that is used to measure the nonlinear material Clock Multiplier Factor.
Background technology
Frequency multiplication (or being called secondary harmonic generation (SHG)) is typical, most important, the most basic technology in the nonlinear optics mixing, it also is most widely used technology, frequency doubling technology is to utilize the quadratic nonlinearity effect of nonlinear crystal under the light laser effect, making frequency is that the laser of ω becomes frequency doubled light or the second harmonic that frequency is 2 ω after by nonlinear crystal, we can say that frequency doubling technology is the basis of laser frequency conversion, the development of laser hi-tech and the application of widening laser are had crucial meaning.Can obtain multi-wavelength's laser by laser freuqency doubling, for example can produce ruddiness, green glow, blue light, ultraviolet and deep ultraviolet laser etc., the light of these generations has great application prospect and vast market at aspects such as Large Screen Laser Display, laser medicine, high density storage, microelectronics, micromechanics, laser holography and pumping tunable optical parameter lasers.We will be called frequency double laser with the device that nonlinear material produces double-frequency laser, generally the laser of incident be called fundamental frequency light, and the laser that is come out by frequency double laser is called frequency doubled light or second harmonic.As obtaining the frequency-doubled effect of the nonlinear material that uses in the frequency double laser, then need the Clock Multiplier Factor of nonlinear material is measured, but because the growth fraction of nonlinear crystal difficulty and needing for a long time, and most nonlinear crystals are to exist with form of powder, and be insolubility, normally obtain by the method that adopts measurement crystal powder frequency-doubled effect so measure the Clock Multiplier Factor of nonlinear crystal.Obtain semiquantitative result though measure the method for crystal powder frequency-doubled effect, can be fast and effectively provide reliable basis for the research of nonlinear material.
At present, aspect the second nonlinear testing of materials, existing various test is feasible, such as the electric field method of quadratic harmonics, solvent discoloration method, corona polarizing method and Kurtz powder frequency multiplication method etc.Although existing Kurtz powder frequency multiplication method is accurate not as other method on measuring, from development trend, because of it has characteristics such as simple, quick, effective, will be more and more widely so use.Kurtz powder frequency multiplication method can directly reflect the characteristic of the second harmonic of organic or inorganic dusty material, both can be used as the foundation of the second-order nonlinear optical property of estimating the organic or inorganic dusty material, the preliminary election of powder micro crystal material can be provided for the practical frequency multiplication optical crystal of growing again.In addition, for many years, continuous development along with photoelectron technology, many advanced persons' optoelectronic component emerges in an endless stream, thereby have ready conditions traditional Kurtz powder frequency multiplication method is updated in concrete measurement mechanism test process, having introduced boxcar such as Wang Guiling etc., Shao Zongshu etc. have introduced the saturating visible near infrared color filter of filter and 0.53u narrow-cut filter and Schott attenuator, J.M.Halbout, S.Blit etc. have introduced monochromator or the like.In these measurement mechanisms, the apparatus structure more complicated that data acquisition is used, and can not intactly obtain the experimental data of close-spaced wavelength when measuring.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of simple in structure, and can guarantee that measurement result is used to measure the device of nonlinear material Clock Multiplier Factor accurately and reliably.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of device that is used to measure the nonlinear material Clock Multiplier Factor, comprise pump laser source, beam splitter, the spectrometer turntable, the fundamental frequency light probe, the frequency doubled light probe, first fiber spectrometer, second fiber spectrometer and terminal device, described spectrometer turntable is provided with the sample cell that is used to place sample, described fundamental frequency light probe is connected by first optical fiber with described first fiber spectrometer, described frequency doubled light probe is connected by second optical fiber with described second fiber spectrometer, described first fiber spectrometer is connected with described terminal device respectively with described second fiber spectrometer, the fundamental frequency light of described pump laser source output incides and is divided into reflection fundamental frequency light and transmission fundamental frequency light on the described beam splitter, described fundamental frequency light probe detects described reflection fundamental frequency light, and give described first fiber spectrometer with described reflection fundamental frequency light transmission, the intensity signal that described first fiber spectrometer is surveyed the intensity signal of described reflection fundamental frequency light and transmitted described reflection fundamental frequency light is given described terminal device, described transmission fundamental frequency light incides on the described sample, described transmission fundamental frequency light is exported frequency doubled light after described sample frequency multiplication, described frequency doubled light probe detection is to described frequency doubled light, and described frequency doubled light is transferred to described second fiber spectrometer, the intensity signal that described second fiber spectrometer is surveyed the intensity signal of described frequency doubled light and transmitted described frequency doubled light is given described terminal device.
Be provided with the condenser lens of the light intensity that is used to strengthen described transmission fundamental frequency light between described beam splitter and the described spectrometer turntable, described transmission fundamental frequency light incides on the described sample by described condenser lens.
It is the YAG laser instrument of 1064nm that described pump laser source adopts output wavelength.
Described beam splitter is the reflector plate of half-transmitting and half-reflecting, and the input path of described reflector plate and described fundamental frequency light is miter angle.
The model of described first fiber spectrometer is HR4000, and the model of described second fiber spectrometer is USB4000.
Described terminal device is the computing machine that existing fiber spectrometer testing software is housed.
Described sample is tested nonlinear crystal powder or reference crystal powder, and described reference crystal powder is bigger Potassiumiodate powder of frequency-doubled effect or the less urea of frequency-doubled effect.
Compared with prior art, advantage of the present utility model is to be divided into reflection fundamental frequency light and transmission fundamental frequency light by the fundamental frequency light that the beam splitter of half-transmitting and half-reflecting is exported pump laser source, reflection fundamental frequency light is directly detected the back by the fundamental frequency light probe and surveys its intensity signal by first fiber spectrometer, transmission fundamental frequency light is then removed to survey frequency doubled light by the frequency doubled light probe after the sample frequency multiplication earlier again, and frequency doubled light is transferred to second fiber spectrometer, second fiber spectrometer is surveyed the intensity signal of frequency doubled light, fundamental frequency light divides two light paths to walk like this, has effectively reduced the influence of light source fluctuation to frequency-doubled effect; Because the utility model has adopted fiber spectrometer to survey intensity signal, can realize all band detection intensity signal like this, fiber spectrometer takes in neighbourhood noise simultaneously, makes The ultimate results more reliable accurately.By between beam splitter and spectrometer turntable, a condenser lens being set, can effectively strengthen light intensity.
Description of drawings
Fig. 1 is a composition structural representation of the present utility model.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As shown in the figure, a kind of device that is used to measure the nonlinear material Clock Multiplier Factor, comprise that pump laser source 1, beam splitter 2, spectrometer turntable 4, fundamental frequency light probe 6, frequency doubled light probe 8, model are that HR4000 first fiber spectrometer 7, model are USB4000 second fiber spectrometer 9 and terminal device 10, terminal device 10 can adopt the computing machine that existing fiber spectrometer testing software is housed, and it is the YAG laser instrument of 1064nm that pump laser source 1 adopts output wavelength; Beam splitter 2 is the reflector plate of half-transmitting and half-reflecting, the angle β that the fundamental frequency light of reflector plate and pump laser source 1 output incides the input path of reflector plate is a miter angle, be provided with condenser lens 3 between beam splitter 2 and the spectrometer turntable 4, mainly work to strengthen light intensity at this condenser lens 3; Spectrometer turntable 4 is provided with the sample cell 5 that is used to put sample 13, sample 13 is tested nonlinear crystal powder or reference crystal powder, the reference crystal powder is bigger Potassiumiodate powder of frequency-doubled effect or the less urea of frequency-doubled effect, by adjusting spectrometer turntable 4, can change the shooting angle of the light of after sample 13 frequencys multiplication, exporting, θ angle as shown in fig. 1; Fundamental frequency light probe 6 is connected by first optical fiber 11 with first fiber spectrometer 7, frequency doubled light probe 8 is connected by second optical fiber 12 with second fiber spectrometer 9, first fiber spectrometer 7 is connected with terminal device 10 respectively with second fiber spectrometer 9, first fiber spectrometer 7 (wavelength be 400～1000nm) and second fiber spectrometer 9 (wavelength is 200～800nm) to have high precision, characteristics such as high resolving power, and the scope of surveying light intensity is wider, can all band survey intensity signal, simultaneously neighbourhood noise is taken in, make measurement result more accurately and reliably and comprehensively.
Spectrometer turntable 4, fundamental frequency light probe 6 and frequency doubled light probe 8 all adopt prior art in this specific embodiment.
If use the utility model to obtain the Clock Multiplier Factor of tested nonlinear crystal powder, then need successively use the utility model to survey the reflection fundamental frequency light of tested nonlinear crystal powder and intensity signal and the reflection fundamental frequency light of reference crystal powder and the intensity signal of frequency doubled light of frequency doubled light, detailed process is as follows: pump laser source 1 output wavelength is the fundamental frequency light of 1064nm, fundamental frequency light incides on the beam splitter 2, because beam splitter 2 is the reflector plate of a slice half-transmitting and half-reflecting, the fundamental frequency light of a part is reflected when fundamental frequency light is got on the beam splitter, and the fundamental frequency light of another part is by transmission, claim the part fundamental frequency light that is reflected to be reflection fundamental frequency light at this, and claim by the part fundamental frequency light of transmission to be transmission fundamental frequency light, the fundamental frequency light of pump laser source 1 output divides two light paths to walk like this, can effectively reduce the influence of light source fluctuation, on the light path of reflection fundamental frequency light, fundamental frequency light probe 6 detects reflection fundamental frequency light, and will reflect the fundamental frequency light transmission to first fiber spectrometer 7, first fiber spectrometer 7 is surveyed the intensity signal of reflection fundamental frequency light and the intensity signal of transmission reflection fundamental frequency light is given terminal device 10, and on the light path of transmission fundamental frequency light, transmission fundamental frequency light incides on the tested nonlinear crystal powder by condenser lens 3, transmission fundamental frequency light is exported frequency doubled light after tested nonlinear crystal powder frequency multiplication, frequency doubled light probe 8 detects frequency doubled light, and frequency doubled light is transferred to the intensity signal that second fiber spectrometer, 9, the second fiber spectrometers 9 survey the intensity signal of frequency doubled lights and transmit frequency doubled light gives terminal device 10; The fundamental frequency light of the process measurement reference crystal powder that the fundamental frequency light of the tested nonlinear crystal powder of employing measurement is identical with the intensity signal of frequency doubled light and the intensity signal of frequency doubled light; Utilize the external comparator (not shown) that the reflection fundamental frequency light of tested nonlinear crystal powder and the intensity signal of frequency doubled light and the reflection fundamental frequency light of reference crystal powder and the intensity signal of frequency doubled light are handled at last, obtain the Clock Multiplier Factor of tested nonlinear crystal powder, the Clock Multiplier Factor of the Clock Multiplier Factor of tested nonlinear crystal powder=(light intensity of the frequency doubled light of the light intensity/tested nonlinear crystal powder of the reflection fundamental frequency light of tested nonlinear crystal powder)/(light intensity of the frequency doubled light of the light intensity/reference crystal powder of the reflection fundamental frequency light of reference crystal powder) * reference crystal powder.
In actual application, if the frequency-doubled effect of tested nonlinear crystal powder is bigger, then can use the Potassiumiodate powder as the reference crystal powder, if the frequency-doubled effect of tested nonlinear crystal powder is less, then can use urea as the reference crystal powder, in measuring process, need to select to have the tested nonlinear crystal powder and the reference crystal powder of same particle size and thickness.
Claims (7)
1, a kind of device that is used to measure the nonlinear material Clock Multiplier Factor, it is characterized in that comprising pump laser source, beam splitter, the spectrometer turntable, the fundamental frequency light probe, the frequency doubled light probe, first fiber spectrometer, second fiber spectrometer and terminal device, described spectrometer turntable is provided with the sample cell that is used to put sample, described fundamental frequency light probe is connected by first optical fiber with described first fiber spectrometer, described frequency doubled light probe is connected by second optical fiber with described second fiber spectrometer, described first fiber spectrometer is connected with described terminal device respectively with described second fiber spectrometer, the fundamental frequency light of described pump laser source output incides and is divided into reflection fundamental frequency light and transmission fundamental frequency light on the described beam splitter, described fundamental frequency light probe detects described reflection fundamental frequency light, and give described first fiber spectrometer with described reflection fundamental frequency light transmission, the intensity signal that described first fiber spectrometer is surveyed the intensity signal of described reflection fundamental frequency light and transmitted described reflection fundamental frequency light is given described terminal device, described transmission fundamental frequency light incides on the described sample, described transmission fundamental frequency light is exported frequency doubled light after described sample frequency multiplication, described frequency doubled light probe detection is to described frequency doubled light, and described frequency doubled light is transferred to described second fiber spectrometer, the intensity signal that described second fiber spectrometer is surveyed the intensity signal of described frequency doubled light and transmitted described frequency doubled light is given described terminal device.
2, a kind of device that is used to measure the nonlinear material Clock Multiplier Factor according to claim 1, it is characterized in that being provided with between described beam splitter and the described spectrometer turntable condenser lens of the light intensity that is used to strengthen described transmission fundamental frequency light, described transmission fundamental frequency light incides on the described sample by described condenser lens.
3, a kind of device that is used to measure the nonlinear material Clock Multiplier Factor according to claim 2 is characterized in that it is the YAG laser instrument of 1064nm that described pump laser source adopts output wavelength.
4, a kind of device that is used to measure the nonlinear material Clock Multiplier Factor according to claim 2 is characterized in that described beam splitter is the reflector plate of half-transmitting and half-reflecting, and the input path of described reflector plate and described fundamental frequency light is miter angle.
5, a kind of device that is used to measure the nonlinear material Clock Multiplier Factor according to claim 2, the model that it is characterized in that described first fiber spectrometer is HR4000, the model of described second fiber spectrometer is USB4000.
6, a kind of device that is used to measure the nonlinear material frequency-doubled effect according to claim 2 is characterized in that described terminal device is the computing machine that existing fiber spectrometer testing software is housed.
7, according to each described a kind of device that is used to measure the nonlinear material Clock Multiplier Factor in the claim 1 to 6, it is characterized in that described sample is tested nonlinear crystal powder or reference crystal powder, described reference crystal powder is bigger Potassiumiodate powder of frequency-doubled effect or the less urea of frequency-doubled effect.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009201204602U CN201408163Y (en) | 2009-05-20 | 2009-05-20 | Device for measuring clock multiplier factor of nonlinear material |
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| CN2009201204602U CN201408163Y (en) | 2009-05-20 | 2009-05-20 | Device for measuring clock multiplier factor of nonlinear material |
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| CN201408163Y true CN201408163Y (en) | 2010-02-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064460A (en) * | 2010-10-14 | 2011-05-18 | 清华大学 | Method for measuring and controlling power of frequency double laser in laser heat treatment |
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2009
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064460A (en) * | 2010-10-14 | 2011-05-18 | 清华大学 | Method for measuring and controlling power of frequency double laser in laser heat treatment |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100217 Termination date: 20120520 |