CN103774207A - Chiral crystal growing device and method - Google Patents
Chiral crystal growing device and method Download PDFInfo
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- CN103774207A CN103774207A CN201410014072.1A CN201410014072A CN103774207A CN 103774207 A CN103774207 A CN 103774207A CN 201410014072 A CN201410014072 A CN 201410014072A CN 103774207 A CN103774207 A CN 103774207A
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Abstract
The invention discloses a chiral crystal growing device and a chiral crystal growing method. The chiral crystal growing device is characterized by comprising a laser, a polarizer, a light conversion propagation assembly and a liquid container, wherein the polarizer is arranged on a light propagation path of a laser beam emitted by the laser, the light conversion propagation assembly is arranged between the polarizer and the liquid container, after the laser beam emitted by the laser passes through the polarizer, linearly polarized light is formed, after the linearly polarized light output by the polarizer passes through the light conversion propagation assembly, beam expanding parallel circularly polarized light is formed, and the beam expanding parallel circularly polarized light output by the light conversion propagation assembly irradiates a water-soluble chiral crystal saturated solution contained in the liquid container. The chiral crystal growing device has the advantages that the growing device is simple in structure, convenient to operate, capable of controlling the rotation direction of chiral crystals by matching with the corresponding growing method and beneficial to increasing of the yield of the chiral crystal with specific single rotation direction, and the chiral crystal growing device and the chiral crystal growing method are harmless to operators and environments.
Description
Technical field
The present invention relates to a kind of growing technology of chiral crystal, especially relate to a kind of growing apparatus and method of chiral crystal.
Background technology
When the solution of polarized light by some crystal or some amorphous material, its vibration plane, take the propagation direction of light as the phenomenon that axis rotates, is called optical rotation phenomenon, and this crystalloid or amorphous material have opticity, are called optical rotatory substance.Because the rotation of vibration plane has directivity, therefore optical rotatory substance can be divided into again levo-rotatory substance and dextro-rotatory substance.Just there are left-handed and two kinds of structures of dextrorotation chiral crystals such as quartz crystal, sodium chlorate crystal, sodium bromate crystal.Except having optical rotation phenomenon, these chiral crystals also have obvious effect of dispersion.Under optical electric field effect, this class chiral crystal is due to the specificity of its crystalline structure, the electropolarization producing in crystal is uneven distribution state in space, closely cause polarization and the non-linear relation of optical electric field of chiral crystal, produces rotatory dispersion effect.
At present, the rotatory dispersion effect based on this class chiral crystal, multiple optics has been developed production, such as optical filter, optoisolator etc.Therefore, just seem very crucial as the preparation of the chiral crystals such as the sodium chlorate of one of important raw materials for production of above-mentioned optics.The chiral crystals such as sodium chlorate are generally to lower the temperature or the method for evaporating makes by the aqueous solution.These methods in the process of crystal growth usually because the factors such as the potential of hydrogen of stir speed (S.S.), solution and the chirality symmetry breaking of degree of supersaturation and crystal cause the rotation direction of chiral crystal to fix, the near and chiral crystal (seed crystal) of the specific rotation direction of generation that cannot be stable.Along with the raising of correlation technique level, researchist utilizes β radiation and ultrasonic wave to affect left-right rotary in crystal growing process to ratio, and obtain certain effect, but these technique means operations are generally too complicated, and long-term β radiation may have a negative impact to the healthy of operator itself; In addition, ultrasonic wave control crystal left-right rotary to method ripe not enough, especially on the productive rate of controlling specific single rotation direction chiral crystal, also have much room for improvement.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of simple in structure, easy to operate, and can control chiral crystal rotation direction growing apparatus and be conducive to improve the growth method of specific single rotation direction chiral crystal productive rate.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of growing apparatus of chiral crystal, comprise laser apparatus, polarizer, assembly and solution vessel are propagated in light conversion, described polarizer is arranged on the propagation path of light of laser beam of described laser emitting, between polarizer described in described light conversion propagation assembly is arranged at and described solution vessel, the laser beam of described laser emitting forms line polarized light after described polarizer, the line polarized light of described polarizer output forms and expands parallel cylindrical polarized light after assembly is propagated in described light conversion, described light conversion is propagated on the saturated solution that expands the water-soluble chiral crystal of parallel cylindrical polarizing light irradiation in being contained in described solution vessel of assembly output.
Described light conversion is propagated assembly and is made up of λ/4 phase delay device, laser beam expanding element and speculum, described polarizer, described λ/4 phase delay device, described laser beam expanding element and described speculum are successively set on the propagation path of light of laser beam of described laser emitting, and described solution vessel is arranged on the catoptrical propagation path of light of described speculum reflection; The line polarized light of described polarizer output forms circularly polarized light after described λ/4 phase delay device, the circularly polarized light of described λ/4 phase delay device output forms and expands directional light after described laser beam expanding element, and this expands directional light for expanding parallel cylindrical polarized light, the output of described laser beam expanding element expand parallel cylindrical polarizing light irradiation on described speculum, the expanding on the saturated solution that parallel cylindrical polarized light irradiates the water-soluble chiral crystal in being contained in described solution vessel straight up of described speculum reflection.
Described light conversion is propagated assembly and is made up of λ/4 phase delay device, laser beam expanding element and speculum, described polarizer, described laser beam expanding element and described speculum are successively set on the propagation path of light of laser beam of described laser emitting, and described λ/4 phase delay device and described solution vessel are successively set on the catoptrical propagation path of light of described speculum reflection; The line polarized light of described polarizer output forms and expands directional light after described laser beam expanding element, and this expands directional light for expanding parallel lines polarized light, what described laser beam expanding element was exported expands parallel lines polarizing light irradiation on described speculum, the parallel lines polarized light that expands of described speculum reflection forms and expands parallel cylindrical polarized light after described λ/4 phase delay device, the expanding on the saturated solution that parallel cylindrical polarized light irradiates the water-soluble chiral crystal in the solution vessel described in being contained in straight up of described λ/4 phase delay device output.
Described light conversion is propagated assembly and is made up of λ/4 phase delay device, laser beam expanding element and speculum, described polarizer, described λ/4 phase delay device and described speculum are successively set on the propagation path of light of laser beam of described laser emitting, and described laser beam expanding element and described solution vessel are successively set on the catoptrical propagation path of light of described speculum reflection; The line polarized light of described polarizer output forms circularly polarized light after described λ/4 phase delay device, the circularly polarized light of described λ/4 phase delay device output is radiated on described speculum, the circularly polarized light of described speculum reflection forms and expands directional light after described laser beam expanding element, and this expands directional light for expanding parallel cylindrical polarized light, the expanding on the saturated solution that parallel cylindrical polarized light irradiates the water-soluble chiral crystal in being contained in described solution vessel straight up of described laser beam expanding element output.
Described light conversion is propagated assembly and is made up of λ/4 phase delay device, laser beam expanding element and speculum, described polarizer and described speculum are successively set on the propagation path of light of laser beam of described laser emitting, and described laser beam expanding element, described λ/4 phase delay device and described solution vessel are successively set on the catoptrical propagation path of light of described speculum reflection; The line polarized light of described polarizer output is radiated on described speculum, the line polarized light of described speculum reflection forms and expands directional light after described laser beam expanding element, and this expands directional light for expanding parallel lines polarized light, the parallel lines polarized light that expands that described laser beam expanding element forms forms and expands parallel cylindrical polarized light after described λ/4 phase delay device, the expanding on the saturated solution that parallel cylindrical polarized light irradiates the water-soluble chiral crystal in the solution vessel described in being contained in straight up of described λ/4 phase delay device output.
Described λ/4 phase delay device is fresnel prism or quarter wave plate; The diameter that expands directional light of described laser beam expanding element output is greater than 1 centimetre, be conducive to like this to guarantee to expand the saturated solution of the whole water-soluble chiral crystal of directional light in can complete irradiation solution vessel, and then improve the productive rate of the chiral crystal of specific single rotation direction.
Described speculum is placed horizontal by 45° angle, and the area on the projection plane of the vertical direction of described speculum is greater than the floorage of described solution vessel.
Described laser apparatus is He-Ne laser apparatus or semiconductor pump laser.
A growth method corresponding with the growing apparatus of described chiral crystal, comprises the following steps:
1. open laser apparatus preheating until the power of laser apparatus and the light beam of transmitting reach stable;
2. regulate the relative position of polarizer and λ/4 phase delay device, make λ/4 phase delay device export left-handed circularly polarized light;
3. the solution vessel that water-soluble chiral crystal saturated solution is housed is fixed on speculum directly over, calibrate solution vessel position simultaneously, what make that light conversion propagates assembly output expands the saturated solution of parallel cylindrical polarizing light irradiation to whole water-soluble chiral crystal;
4. under above-mentioned environment, leave standstill, treat to separate out water white regular crystal bottom solution vessel, obtain the chiral crystal that dextrorotation seed crystal quantity is dominant.
Or 1. open laser apparatus preheating until the power of laser apparatus and the light beam of transmitting reach stable;
2. regulate the relative position of polarizer and λ/4 phase delay device, make the circularly polarized light of λ/4 phase delay device output dextrorotation;
3. the solution vessel that water-soluble chiral crystal saturated solution is housed is fixed on speculum directly over, calibrate solution vessel position simultaneously, what make that light conversion propagates assembly output expands the saturated solution of parallel cylindrical polarizing light irradiation to whole water-soluble chiral crystal;
4. under above-mentioned environment, leave standstill, treat to separate out water white regular crystal bottom solution vessel, obtain the chiral crystal that left-handed seed crystal quantity is dominant.
A growth method corresponding with the growing apparatus of described chiral crystal, comprises the following steps:
1. open laser apparatus preheating until the power of laser apparatus and the light beam of transmitting reach stable;
2. regulate the position of polarizer and λ/4 phase delay device, make the output of λ/4 phase delay devices left-handed expand parallel cylindrical polarized light;
3. the solution vessel that water-soluble chiral crystal saturated solution is housed is fixed on speculum directly over, calibrate solution vessel position simultaneously, what make that light conversion propagates assembly output expands the saturated solution of parallel cylindrical polarizing light irradiation to whole water-soluble chiral crystal;
4. under above-mentioned environment, leave standstill, treat to separate out water white regular crystal bottom solution vessel, obtain the chiral crystal that dextrorotation seed crystal quantity is dominant.
Or 1. open laser apparatus preheating until the power of laser apparatus and the light beam of transmitting reach stable;
2. regulate the position of polarizer and λ/4 phase delay device, what make λ/4 phase delay devices output dextrorotation expands parallel cylindrical polarized light;
3. the solution vessel that water-soluble chiral crystal saturated solution is housed is fixed on speculum directly over, calibrate solution vessel position simultaneously, what make that light conversion propagates assembly output expands the saturated solution of parallel cylindrical polarizing light irradiation to whole water-soluble chiral crystal;
4. under above-mentioned environment, leave standstill, treat to separate out water white regular crystal bottom solution vessel, obtain the chiral crystal that left-handed seed crystal quantity is dominant.
Compared with prior art, the invention has the advantages that: the growing apparatus of this chiral crystal comprises laser apparatus, polarizer, assembly and solution vessel are propagated in light conversion, light conversion is propagated on the saturated solution that expands parallel cylindrical polarizing light irradiation whole water-soluble chiral crystal in solution vessel of a certain specific rotation direction of assembly output, can corresponding induction dextrorotation or the growth of left-handed chiral crystal, this growth cell configuration is simple, easy to operate, and match and can control the rotation direction of chiral crystal with corresponding growth method, and then be conducive to the productive rate of the chiral crystal that improves specific single rotation direction, and the growing apparatus of this chiral crystal and growth method are to operator and environmentally friendly.
Accompanying drawing explanation
Fig. 1 is the composition schematic diagram of the growing apparatus of the embodiment of the present invention one;
Fig. 2 is the composition schematic diagram of the growing apparatus of the embodiment of the present invention two;
Fig. 3 is the composition schematic diagram of the growing apparatus of the embodiment of the present invention three;
Fig. 4 is the composition schematic diagram of the growing apparatus of the embodiment of the present invention four.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the present invention.
Embodiment mono-: a kind of growing apparatus of chiral crystal, as shown in Figure 1, it comprises laser apparatus 1, polarizer 2, λ/4 phase delay device 3, laser beam expanding element 4, speculum 5 and solution vessel 7, polarizer 2, λ/4 phase delay device 3, laser beam expanding element 4 and speculum 5 are set in turn on the propagation path of light of laser apparatus 1 emitting laser light beam, and solution vessel 7 is placed on the catoptrical propagation path of light reflecting on transparent glass platform 6 and in speculum 5.Laser apparatus 1 emitting laser light beam forms line polarized light after polarizer 2, the line polarized light that polarizer 2 is exported forms circularly polarized light after λ/4 phase delay device 3, the circularly polarized light that λ/4 phase delay device 3 is exported forms and expands directional light after laser beam expanding element 4, and this expands directional light for expanding parallel cylindrical polarized light, what laser beam expanding element 4 was exported expands parallel cylindrical polarizing light irradiation on speculum 5, what speculum 5 reflected expands parallel cylindrical polarized light through on the rear saturated solution that irradiates the water-soluble chiral crystal in being contained in solution vessel 7 of transparent glass platform 6.
Embodiment bis-: a kind of growing apparatus of chiral crystal, as shown in Figure 2, its building block is similar to embodiment mono-, difference is: polarizer 2, laser beam expanding element 4 and speculum 5 are successively set on the propagation path of light of laser apparatus 1 emitting laser light beam, and λ/4 phase delay device 3 and solution vessel 7 are successively set on the catoptrical propagation path of light that speculum 5 reflects.The line polarized light that polarizer 2 is exported forms and expands directional light after laser beam expanding element 4, and this expands directional light for expanding parallel lines polarized light, what laser beam expanding element 4 was exported expands parallel lines polarizing light irradiation on speculum 5, what speculum 5 reflected expand parallel lines polarized light forms and expands parallel cylindrical polarized light after λ/4 phase delay device 3, and what λ/4 phase delay device 3 was exported expands parallel cylindrical polarized light through on the rear saturated solution that irradiates the water-soluble chiral crystal in being contained in solution vessel 7 of transparent glass platform 6.
Embodiment tri-: a kind of growing apparatus of chiral crystal, as shown in Figure 3, its building block is similar to embodiment mono-, difference is: polarizer 2, λ/4 phase delay device 3 and speculum 5 are successively set on the propagation path of light of laser apparatus 1 emitting laser light beam, and laser beam expanding element 4 and solution vessel 7 are successively set on the catoptrical propagation path of light that speculum 5 reflects.The line polarized light that polarizer 2 is exported forms circularly polarized light after λ/4 phase delay device 3, the circularly polarized light that λ/4 phase delay device 3 is exported is radiated on speculum 5, the circularly polarized light that speculum 5 reflects forms and expands directional light after laser beam expanding element 4, and this expands directional light for expanding parallel cylindrical polarized light, what laser beam expanding element 5 was exported expands parallel cylindrical polarized light through on the rear saturated solution that irradiates the water-soluble chiral crystal in being contained in solution vessel 7 of transparent glass platform 6.
Embodiment tetra-: a kind of growing apparatus of chiral crystal, as shown in Figure 4, its building block is similar to embodiment mono-, difference is: polarizer 2 and speculum 5 are successively set on the propagation path of light of laser apparatus 1 emitting laser light beam, and laser beam expanding element 4, λ/4 phase delay device 3 and solution vessel 7 are successively set on the catoptrical propagation path of light that speculum 5 reflects; The line polarized light that polarizer 2 is exported is radiated on speculum 5, the line polarized light that speculum 5 reflects forms and expands directional light after laser beam expanding element 4, and this expands directional light for expanding parallel lines polarized light, what laser beam expanding element 4 formed expand parallel lines polarized light forms and expands parallel cylindrical polarized light after λ/4 phase delay device 3, and what λ/4 phase delay device 3 was exported expands parallel cylindrical polarized light through on the rear saturated solution that irradiates the water-soluble chiral crystal in being contained in solution vessel 7 of transparent glass platform 6.
In above-described embodiment one to embodiment tetra-, λ/4 phase delay device 3 all adopts existing quarter wave plate, and wherein, λ represents wavelength; Laser apparatus 1 adopts existing He-Ne laser apparatus; The diameter of what laser beam expanding element 4 was exported expand directional light is greater than 1 centimetre; Speculum 5 is placed horizontal by 45° angle, and the area on the projection plane of the vertical direction of speculum 5 is greater than the floorage of solution vessel 7; Solution vessel 7 is cylindrical solution vessel, and the internal diameter of cylindrical solution vessel is less than the diameter that expands parallel cylindrical polarized light of quarter wave plate output.Cylindrical solution vessel is except being placed on transparent glass platform 6, parallel cylindrical polarized light is complete is irradiated under the prerequisite that the saturated solution of water-soluble chiral crystal and the polarization state that expands parallel cylindrical polarized light of incident do not change guaranteeing to expand, and cylindrical solution vessel can also fix by clamping device.
In other concrete application, λ/4 phase delay device 3 also can adopt existing fresnel prism, and laser apparatus 1 also can adopt existing semiconductor pump laser.
The corresponding growth method of growing apparatus of the chiral crystal providing with embodiment mono-, comprises the following steps:
1. open laser apparatus 1 preheating until the power of laser apparatus 1 and the light beam of transmitting reach stable;
2. regulate the relative position of polarizer and quarter wave plate, make quarter wave plate export the circularly polarized light of left-handed or dextrorotation;
3. the solution vessel 7 that water-soluble chiral crystal saturated solution is housed is placed on transparent glass platform 6 and be fixed on speculum 5 directly over, calibrate solution vessel position, what make that speculum 5 reflects expands the saturated solution of parallel cylindrical polarizing light irradiation to whole water-soluble chiral crystal simultaneously;
4. under above-mentioned environment, leave standstill, until water white regular crystal is separated out in solution vessel 7 bottoms.
The preparation method who is applied to the saturated solution of the water-soluble chiral crystal in above-mentioned growth method, take sodium chlorate saturated solution as example, comprises the following steps:
1. in the water bath with thermostatic control that exceeds 5～10 ℃ than room temperature, solute saturation ratio with reference to sodium chlorate saturated solution at this temperature, determine the roughly proportioning of sodium chlorate and water, constantly add sodium chlorate to filling in the solution vessel of water, and fully stir, until the sodium chlorate in solution is no longer dissolved when dissolving completely and continuing to add sodium chlorate, obtain initial saturated solution.
2. in same water bath with thermostatic control, to step 1. in the initial saturated solution of preparation filter, obtain filtrate, in filtration procedure, to stir in real time, can dissolve rapidly and leach with filtrate with the solute that guarantees to separate out in filtration procedure.
3. by step, the filtrate in 2. continuation stirs about 20 minutes, and with plastics film or other material, clear liquid is sealed while stirring, to prevent that other impurity such as dust from entering, has stirred rear acquisition sodium chlorate saturated solution.
4. the sodium chlorate saturated solution that step obtains in 3., the growing apparatus of putting into rapidly chiral crystal carries out growth left-handed or dextrorotation sodium chlorate crystal, after having prepared sodium chlorate saturated solution, this must in 5 minutes, carry out next step growth step, in order to avoid seed crystal is separated out in advance.
Adopt the growing apparatus of embodiment mono-and in conjunction with the growth method of answering in contrast, carry out sodium chlorate crystal's growth experiment, and contrast with control experiment under 25 ℃ of conditions of room temperature, underlying condition and experimental result are as follows:
Experiment condition: experimental group and control group all adopt the sodium chlorate saturated solution of same batch of preparation in the lower 35 ℃ of waters bath with thermostatic control of same humidity.At this, the growing apparatus that experimental group adopts embodiment mono-to provide, be irradiated to sodium chlorate saturated solution by left circularly polarized light and obtain sodium chlorate chiral crystal, it is the relative position of polarizer 2 and quarter wave plate 3 in regulation experiment device, make the polarization direction of polarizer 2 and the optical axis direction of quarter wave plate 3 be clockwise 45° angle, then produce left-handed circularly polarized light; The growing apparatus that control group does not adopt embodiment mono-to provide, without laser radiation, with the identical environment of experimental group under, obtain sodium chlorate chiral crystal by conventional aqueous solution cooling method.
Experimental result: observe in process of growth, as the 1.5mm that has an appointment
3and can take out while separating out with the seed crystal of the profile rule of upper volume, after with bamboo tweezers (also can adopt plastics tweezers), seed crystal being taken out rapidly and use lens wiping paper wiped clean.In the seed crystal making contouring clearly single sodium chlorate seed crystal carry out rotation direction test, the rotation direction of seed crystal is classified by left and right precession row, result is as shown in table 1, in table 1, "+" represents that the quantity of the dextrorotation sodium chlorate seed crystal of this group growth experiment acquisition is dominant, "-" represents that the quantity of the left-handed sodium chlorate seed crystal of this group growth experiment acquisition is dominant, and "/" represents that the quantity of the dextrorotation of this group growth experiment acquisition, left-handed sodium chlorate seed crystal is consistent.
Sodium chlorate crystal's growing state in table 1 control group and experimental group
Analytical table 1 can obtain: in the identical experiment of 9 set conditions, can find out from the data of experimental group, through the irradiation of circularly polarized light, the phenomenon that dextrorotation seed crystal quantity is dominant is very obvious, and can find out from the data of control group, the quantity of left-handed sodium chlorate seed crystal is dominant, and is dominant and is more or less the same with dextrorotation sodium chlorate seed crystal quantity, there is no larger difference.Therefore, adopt the growing apparatus of chiral crystal of the present invention, under the irradiation of the circularly polarized light of single rotation direction, can induce comparatively significantly the growth of the chiral crystal of corresponding single rotation direction, and then be conducive to the productive rate of the chiral crystal that improves specific single rotation direction.
Claims (10)
1. the growing apparatus of a chiral crystal, it is characterized in that comprising laser apparatus, polarizer, assembly and solution vessel are propagated in light conversion, described polarizer is arranged on the propagation path of light of laser beam of described laser emitting, between polarizer described in described light conversion propagation assembly is arranged at and described solution vessel, the laser beam of described laser emitting forms line polarized light after described polarizer, the line polarized light of described polarizer output forms and expands parallel cylindrical polarized light after assembly is propagated in described light conversion, described light conversion is propagated on the saturated solution that expands the water-soluble chiral crystal of parallel cylindrical polarizing light irradiation in being contained in described solution vessel of assembly output.
2. the growing apparatus of a kind of chiral crystal according to claim 1, it is characterized in that described light conversion propagation assembly is made up of λ/4 phase delay device, laser beam expanding element and speculum, described polarizer, described λ/4 phase delay device, described laser beam expanding element and described speculum are successively set on the propagation path of light of laser beam of described laser emitting, and described solution vessel is arranged on the catoptrical propagation path of light of described speculum reflection; The line polarized light of described polarizer output forms circularly polarized light after described λ/4 phase delay device, the circularly polarized light of described λ/4 phase delay device output forms and expands directional light after described laser beam expanding element, and this expands directional light for expanding parallel cylindrical polarized light, the output of described laser beam expanding element expand parallel cylindrical polarizing light irradiation on described speculum, the expanding on the saturated solution that parallel cylindrical polarized light irradiates the water-soluble chiral crystal in being contained in described solution vessel straight up of described speculum reflection.
3. the growing apparatus of a kind of chiral crystal according to claim 1, it is characterized in that described light conversion propagation assembly is made up of λ/4 phase delay device, laser beam expanding element and speculum, described polarizer, described laser beam expanding element and described speculum are successively set on the propagation path of light of laser beam of described laser emitting, and described λ/4 phase delay device and described solution vessel are successively set on the catoptrical propagation path of light of described speculum reflection; The line polarized light of described polarizer output forms and expands directional light after described laser beam expanding element, and this expands directional light for expanding parallel lines polarized light, what described laser beam expanding element was exported expands parallel lines polarizing light irradiation on described speculum, the parallel lines polarized light that expands of described speculum reflection forms and expands parallel cylindrical polarized light after described λ/4 phase delay device, the expanding on the saturated solution that parallel cylindrical polarized light irradiates the water-soluble chiral crystal in the solution vessel described in being contained in straight up of described λ/4 phase delay device output.
4. the growing apparatus of a kind of chiral crystal according to claim 1, it is characterized in that described light conversion propagation assembly is made up of λ/4 phase delay device, laser beam expanding element and speculum, described polarizer, described λ/4 phase delay device and described speculum are successively set on the propagation path of light of laser beam of described laser emitting, and described laser beam expanding element and described solution vessel are successively set on the catoptrical propagation path of light of described speculum reflection; The line polarized light of described polarizer output forms circularly polarized light after described λ/4 phase delay device, the circularly polarized light of described λ/4 phase delay device output is radiated on described speculum, the circularly polarized light of described speculum reflection forms and expands directional light after described laser beam expanding element, and this expands directional light for expanding parallel cylindrical polarized light, the expanding on the saturated solution that parallel cylindrical polarized light irradiates the water-soluble chiral crystal in being contained in described solution vessel straight up of described laser beam expanding element output.
5. the growing apparatus of a kind of chiral crystal according to claim 1, it is characterized in that described light conversion propagation assembly is made up of λ/4 phase delay device, laser beam expanding element and speculum, described polarizer and described speculum are successively set on the propagation path of light of laser beam of described laser emitting, and described laser beam expanding element, described λ/4 phase delay device and described solution vessel are successively set on the catoptrical propagation path of light of described speculum reflection; The line polarized light of described polarizer output is radiated on described speculum, the line polarized light of described speculum reflection forms and expands directional light after described laser beam expanding element, and this expands directional light for expanding parallel lines polarized light, the parallel lines polarized light that expands that described laser beam expanding element forms forms and expands parallel cylindrical polarized light after described λ/4 phase delay device, the expanding on the saturated solution that parallel cylindrical polarized light irradiates the water-soluble chiral crystal in the solution vessel described in being contained in straight up of described λ/4 phase delay device output.
6. according to the growing apparatus of a kind of chiral crystal described in any one in claim 2 to 5, it is characterized in that described λ/4 phase delay device is fresnel prism or quarter wave plate; The diameter that expands directional light of described laser beam expanding element output is greater than 1 centimetre.
7. the growing apparatus of a kind of chiral crystal according to claim 6, the speculum described in it is characterized in that is placed horizontal by 45° angle, and the area on the projection plane of the vertical direction of described speculum is greater than the floorage of described solution vessel.
8. according to the growing apparatus of a kind of chiral crystal described in any one in claim 1 to 5, it is characterized in that described laser apparatus is He-Ne laser apparatus or semiconductor pump laser.
9. a growth method corresponding with the growing apparatus of the chiral crystal described in claim 2 or 4, is characterized in that comprising the following steps:
1. open laser apparatus preheating until the power of laser apparatus and the light beam of transmitting reach stable;
2. regulate the relative position of polarizer and λ/4 phase delay device, make λ/4 phase delay device export left-handed circularly polarized light;
3. the solution vessel that water-soluble chiral crystal saturated solution is housed is fixed on speculum directly over, calibrate solution vessel position simultaneously, what make that light conversion propagates assembly output expands the saturated solution of parallel cylindrical polarizing light irradiation to whole water-soluble chiral crystal;
4. under above-mentioned environment, leave standstill, treat to separate out water white regular crystal bottom solution vessel, obtain the chiral crystal that dextrorotation seed crystal quantity is dominant.
Or 1. open laser apparatus preheating until the power of laser apparatus and the light beam of transmitting reach stable;
2. regulate the relative position of polarizer and λ/4 phase delay device, make the circularly polarized light of λ/4 phase delay device output dextrorotation;
3. the solution vessel that water-soluble chiral crystal saturated solution is housed is fixed on speculum directly over, calibrate solution vessel position simultaneously, what make that light conversion propagates assembly output expands the saturated solution of parallel cylindrical polarizing light irradiation to whole water-soluble chiral crystal;
4. under above-mentioned environment, leave standstill, treat to separate out water white regular crystal bottom solution vessel, obtain the chiral crystal that left-handed seed crystal quantity is dominant.
10. a growth method corresponding with the growing apparatus of the chiral crystal described in claim 3 or 5, is characterized in that comprising the following steps:
1. open laser apparatus preheating until the power of laser apparatus and the light beam of transmitting reach stable;
2. regulate the position of polarizer and λ/4 phase delay device, make the output of λ/4 phase delay devices left-handed expand parallel cylindrical polarized light;
3. the solution vessel that water-soluble chiral crystal saturated solution is housed is fixed on speculum directly over, calibrate solution vessel position simultaneously, what make that light conversion propagates assembly output expands the saturated solution of parallel cylindrical polarizing light irradiation to whole water-soluble chiral crystal;
4. under above-mentioned environment, leave standstill, treat to separate out water white regular crystal bottom solution vessel, obtain the chiral crystal that dextrorotation seed crystal quantity is dominant.
Or 1. open laser apparatus preheating until the power of laser apparatus and the light beam of transmitting reach stable;
2. regulate the position of polarizer and λ/4 phase delay device, what make λ/4 phase delay devices output dextrorotation expands parallel cylindrical polarized light;
3. the solution vessel that water-soluble chiral crystal saturated solution is housed is fixed on speculum directly over, calibrate solution vessel position simultaneously, what make that light conversion propagates assembly output expands the saturated solution of parallel cylindrical polarizing light irradiation to whole water-soluble chiral crystal;
4. under above-mentioned environment, leave standstill, treat to separate out water white regular crystal bottom solution vessel, obtain the chiral crystal that left-handed seed crystal quantity is dominant.
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