CN204807298U - Spectral measurement polymer dispersion laser experiments system - Google Patents
Spectral measurement polymer dispersion laser experiments system Download PDFInfo
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- CN204807298U CN204807298U CN201520468243.8U CN201520468243U CN204807298U CN 204807298 U CN204807298 U CN 204807298U CN 201520468243 U CN201520468243 U CN 201520468243U CN 204807298 U CN204807298 U CN 204807298U
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Abstract
The utility model relates to a spectral measurement polymer dispersion laser experiments system, it is main including laser instrument (1), polaroid (2), beam expanding lens (3), detector (5) and computer (6), set gradually laser instrument (1) according to the laser emission direction, polaroid (2) and beam expanding lens (3), beam expanding lens (3) rear side sets up sample (4), detector (5) are connected with sample (4), computer (6) are connected with laser instrument (1) and detector (5) respectively. Place in the liquid crystal cell sample (4). Be provided with between beam expanding lens (3) and sample (4) aperture diaphragm (7). The utility model discloses laser surface plasmon is theoretical at random based on the liquid crystal for spectral measurement polymer dispersion laser experiments system, has proposed one kind and has been used for testing the on -engine experimental apparatus of polymer dispersion liquid crystal, can realize the test effectively to the regulation space is big, convenience simple to use.
Description
Technical field
The utility model relates to a kind of curing circuit for polymer samples test, particularly relates to a kind of spectral measurement polymer dispersed tungstate laser experimental system, belongs to polymer laser field tests.
Background technology
Random Laser is one of the study hotspot in current laser physics field.Different from traditional laser instrument, Random Laser resonance free chamber, feedback derives from the multiple scattering of light in Disordered Media.According to the difference of feedback mechanism, Random Laser can be divided into incoherent feedback and coherent feedback Random Laser two type.About the research of Random Laser, theoretical side mainly concentrates on Forming Mechanism and the optical characteristics of Random Laser; Experiment aspect lays particular emphasis on the improvement with experimental technique of choosing of experiment material.
All there is a series of shortcoming in method traditional at present, comprising: 1) threshold value pump intensity degree depends on and excites area, excites area less, requires that threshold value is higher.When exciting area to be less than a critical value, no matter how strong pumping light is, all can not produce Random Laser; 2) each is to observing laser emission, and line structure changes with viewing angle; 3) light-emitting zone skewness, when pumping illumination is mapped on random medium, forms many light-emitting zones, stochastic distribution in the three dimensions of medium.This structure along with incident intensity and medium structure and change; 4) longitudinal mode of accidental laser can be one, several and multiple, and increases with pump power.The frequency of this longitudinal mode and frequency difference are random variation, and they change along with the position of pumping light and intensity.And when pump region increases to a certain size, the stimulated radiation spike on spectrogram is not discrete, but continually varying.This causes spectral radiance map forms a broad peak.This point is different from many longitudinal mode vibrations of conventional laser.Each longitudinal mode of conventional laser all comes from same resonator cavity, although longitudinal mode number can increase with the enhancing of pumping light, the frequency difference between longitudinal mode is changeless.And the longitudinal mode of accidental laser may from different closed loop chambeies, when longitudinal mode number strengthens with pump intensity degree and increases, the frequency difference between each longitudinal mode is also change.
Utility model content
In order to overcome the deficiencies in the prior art, resolving the problem of prior art, making up the deficiency of existing existing product in the market.
The utility model provides a kind of spectral measurement polymer dispersed tungstate laser experimental system, mainly comprise laser instrument, polaroid, beam expanding lens, detector and computing machine, laser instrument, polaroid and beam expanding lens is set gradually according to Laser emission direction, on rear side of beam expanding lens, sample is set, detector is connected with sample, and computing machine is connected with laser instrument and detector respectively.
Preferably, above-mentioned laser instrument is linear polarization, adjusts Q, frequency multiplication Nd:YAG pulsed laser.
Preferably, the pulsewidth of above-mentioned laser instrument is 8ns, and repetition frequency is 10Hz.
Preferably, above-mentioned sample is placed in liquid crystal cell.
Preferably, aperture is provided with between above-mentioned beam expanding lens and sample.
The utility model spectral measurement polymer dispersed tungstate laser experimental system is theoretical based on liquid crystal random laser surface phasmon, propose a kind of experimental provision random for test polymer dispersed LCD, effectively can realize test, and regulate space large, easy to use.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Reference numeral: 1-laser instrument; 2-polaroid; 3-beam expanding lens; 4-sample; 5-detector; 6-computing machine; 7-aperture.
Embodiment
Understand for the ease of those of ordinary skill in the art and implement the utility model, below in conjunction with the drawings and the specific embodiments, the utility model being described in further detail.
The spectral measurement polymer dispersed tungstate laser experimental system that the utility model provides mainly comprises laser instrument 1, polaroid 2, beam expanding lens 3, detector 5 and computing machine 6, laser instrument 1, polaroid 2 and beam expanding lens 3 is set gradually according to Laser emission direction, sample 4 is set on rear side of beam expanding lens 3, detector 5 is connected with sample 4, and computing machine 6 is connected with laser instrument 1 and detector 5 respectively.Laser instrument 1 is linear polarization, adjusts Q, frequency multiplication Nd:YAG pulsed laser.The pulsewidth of laser instrument 1 is 8ns, and repetition frequency is 10Hz.Sample 4 is placed in liquid crystal cell.Aperture 7 is provided with between beam expanding lens 3 and sample 4.
The spectral measurement polymer dispersed tungstate laser experimental system that the utility model provides, concrete principle of work is: laser beam is radiated on liquid crystal cell uniformly through beam expanding lens 3, and the time shutter is about 10 minutes.Sample 4 material, under the irradiation of laser, solidifies fast, and creates the liquid crystal droplet of submicron order.Uniform exposure contributes to liquid crystal droplet and is evenly distributed in polymkeric substance.Sample 4 solidifies the dye adulterated Polymer Dispersed Liquid Crystal needed for just obtaining successfully testing.Polymer film thickness is 10.Pumping laser is linear polarization, adjusts Q, frequency multiplication Nd:YAG pulsed laser 1, and pulsewidth is 8ns, and repetition frequency is 10Hz.After sample 4 is cured, in the polymer matrix, the diameter of liquid crystal droplet changes the random distribution of liquid crystal droplet between 20nm to 80nm.
The utility model spectral measurement polymer dispersed tungstate laser experimental system is theoretical based on liquid crystal random laser surface phasmon, propose a kind of experimental provision random for test polymer dispersed LCD, effectively can realize test, and regulate space large, easy to use.
The embodiment of the above is better embodiment of the present utility model; not limit concrete practical range of the present utility model with this; scope of the present utility model comprises and is not limited to this embodiment, and the equivalence change that all shapes according to the utility model, structure are done is all in protection domain of the present utility model.
Claims (5)
1. a spectral measurement polymer dispersed tungstate laser experimental system, it is characterized in that: described spectral measurement polymer dispersed tungstate laser experimental system mainly comprises laser instrument (1), polaroid (2), beam expanding lens (3), detector (5) and computing machine (6), laser instrument (1) is set gradually according to Laser emission direction, polaroid (2) and beam expanding lens (3), beam expanding lens (3) rear side arranges sample (4), detector (5) is connected with sample (4), computing machine (6) is connected with laser instrument (1) and detector (5) respectively.
2. spectral measurement polymer dispersed tungstate laser experimental system according to claim 1, is characterized in that: described laser instrument (1) is linear polarization, adjusts Q, frequency multiplication Nd:YAG pulsed laser.
3. spectral measurement polymer dispersed tungstate laser experimental system according to claim 2, is characterized in that: the pulsewidth of described laser instrument (1) is 8ns, and repetition frequency is 10Hz.
4. spectral measurement polymer dispersed tungstate laser experimental system according to claim 1, is characterized in that: described sample (4) is placed in liquid crystal cell.
5. according to the spectral measurement polymer dispersed tungstate laser experimental system one of claim 1-4 Suo Shu, it is characterized in that: between described beam expanding lens (3) and sample (4), be provided with aperture (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520468243.8U CN204807298U (en) | 2015-06-25 | 2015-06-25 | Spectral measurement polymer dispersion laser experiments system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520468243.8U CN204807298U (en) | 2015-06-25 | 2015-06-25 | Spectral measurement polymer dispersion laser experiments system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204807298U true CN204807298U (en) | 2015-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201520468243.8U Expired - Fee Related CN204807298U (en) | 2015-06-25 | 2015-06-25 | Spectral measurement polymer dispersion laser experiments system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204807298U (en) |
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2015
- 2015-06-25 CN CN201520468243.8U patent/CN204807298U/en not_active Expired - Fee Related
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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: 20151125 Termination date: 20160625 |
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| CF01 | Termination of patent right due to non-payment of annual fee |