CN103138158A - Multicolor composite random laser output method based on quantum dot size effect - Google Patents
Multicolor composite random laser output method based on quantum dot size effect Download PDFInfo
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- CN103138158A CN103138158A CN201310030212XA CN201310030212A CN103138158A CN 103138158 A CN103138158 A CN 103138158A CN 201310030212X A CN201310030212X A CN 201310030212XA CN 201310030212 A CN201310030212 A CN 201310030212A CN 103138158 A CN103138158 A CN 103138158A
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Abstract
The invention discloses a multicolor compound random laser output method based on a quantum dot size effect. The method includes a first step of etching a groove in a triangle substrate through utilization of the machining/laser processing technology, wherein the width of the groove is 40-120 microns, the depth of the groove is 30-80 microns, and the surface of the groove is uneven, a second step of filling quantum dots on the surface inside the groove to form a membrane, a third step of reflecting laser signals to a focusing lens through a semi-transparent semi-reflective mirror and a reflecting mirror, wherein the focusing lens converges the laser signals into the groove in the triangle substrate, and a fourth step of utilizing external signals to change an output light path structure to obtain multicolor compound random lasers. Through changes of the sizes of the quantum dots to obtain the emergent multicolor compound random lasers, the multicolor compound random laser output method based on the quantum dot size effect is capable of achieving outputting and compounding of the multicolor compound random lasers. The mixed lasers are good in monochromaticity, free from affluence of environmental factors such as temperature and voltage, and capable of achieving outputting compound and adjustable random laser signals.
Description
Technical field
The present invention relates to laser technology field, be specifically related to that a kind of polychrome based on the quantum dot size effect is compound random to swash
The light output intent.
Background technology
In recent years, Random Laser is with its special feedback mechanism, the advantages such as operation wavelength is specific, easily manufactured, with low cost have potential using value in fields such as document coding, enemy and we's discriminating, flat panel display, integrated optics, remote temperature-sensings and cause the hot topic research of international laser educational circles.Random Laser radiation source self-activation Disordered Media, Multiple Scattering by radiant light in medium provides bulk of optical feedback, thereby obtain larger gain, need not the extra resonance chamber, at semiconductor and laser crystal powder, the dye solution of doped nanoparticle and polymer, the opal of dyestuff penetration, biological tissue, sintered glass, in the unordered gain systems such as liquid crystal material of optical fiber and dopant dye, the migration distance that is enough to photon in gain media when the intensity of multiple scattering increases to greater than gain length, make effective pumping volume greater than critical volume, gain in system will be greater than loss, just can obtain relevant random stimulated radiation.
At present, compare with traditional accidental laser, it is wide narrower that the quantum dot Random Laser has half-wave, the characteristics that pumping threshold is low.What quantum dot Random Laser outgoing light wavelength was single is determined by the size of quantum dot, and quantum dot size changes the emergent light wavelength change of bringing can cover whole visible-range, and the emergent light wavelength is not subjected to the impact of external environment, and the color unicity is better.
Therefore, based on the problems referred to above, the invention provides the compound Random Laser output intent of a kind of polychrome based on the quantum dot size effect.
Summary of the invention
Goal of the invention: the invention provides a kind of compound Random Laser of polychrome output side based on the quantum dot size effect
Method realizes the output of the compound Random Laser signal of polychrome.
Technical scheme: the invention provides a kind of compound Random Laser of polychrome output side based on the quantum dot size effect
Method, the method comprises the steps:
Step (1) utilizes machining/laser processing technology to etch groove on triangular base, and wherein groove size is wide 40～120 microns, and dark 30～80 microns, surface configuration is uneven.
Step (2) is filled in the inside grooves surface filming with quantum dot.
Step (3) reflexes to condenser lens by semi-transparent semi-reflecting lens and speculum with laser signal, and condenser lens converges to laser signal in groove in triangular base.
Step (4) utilizes external signal to change the output light path structure, obtains the compound Random Laser of polychrome.
Described triangular base and circular-base adopt glass or metal material, both adopt identical material when wherein using.
On described triangular base, the groove of etching is parallel on one side arbitrarily with triangle.
The groove of described etching is single groove or groove group.
Described fill method adopts the spin-coating film method.
Described condenser lens is cylindrical lens.
During described filling etched recesses, triangular base is nested in the corresponding circular-base that is carved with triangular groove.
Described quantum dot uses CdSe/ZnS nucleocapsid structure oil phase quantum dot.
Utilize machining/laser processing technology to etch groove on triangular base in described step (1), preferred groove size is wide 60～80 microns, dark 45～60 microns.
Compared with prior art, beneficial effect of the present invention is:
The compound Random Laser output intent of a kind of polychrome based on the quantum dot size effect of the present invention, the method obtains the outgoing of multiple color Random Laser by changing quantum dot size, can realize the output of polychrome Random Laser and compound, to mix the monochromaticjty of laser good, be not subjected to environmental factor (temperature, voltage etc.) impact, can realize exporting compound adjustable Random Laser light signal, in white Random Laser, laser code, the fields such as integrated photon have important application.
Description of drawings
Fig. 1 a, 1b, 1c are the structural representation of the embodiment of the present invention;
Wherein in figure, sequence number is as follows: the 1-laser, 2,5,7-semi-transparent semi-reflecting lens, 3,4,6-speculum, 8,9,10,11-cylindrical lens, 12,29-triangular base, 13,14,15,16,25,26,27, the 28-etched recesses, 17,18,19,20,21,22,23, the 24-one-way glass, 30,32,34, the 36-circular-base, 31,33,35, the 37-triangular groove.
Embodiment
Below in conjunction with specific embodiment, the compound Random Laser output intent of a kind of polychrome based on the quantum dot size effect of the present invention is elaborated:
The compound Random Laser output intent of a kind of polychrome based on the quantum dot size effect as shown in Fig. 1 a, 1b, 1c, the method comprises the steps:
Step (1) utilizes machining/laser processing technology to etch groove 13,14,15,16,25,26,27,28 on triangular base 12,29, wherein groove size is, wide 40 microns, 60 microns, 75 microns, 90 microns, 120 microns, dark 30 microns, 50 microns, 60 microns, 70 microns, 80 microns, surface configuration is uneven.
Step (2) is filled in groove 13,14,15,16,25,26,27,28 inner surface filmings with quantum dot.
Step (3) by semi-transparent semi-reflecting lens 2,5,7 and speculum 3,4,6 laser signal is reflexed to condenser lens, condenser lens converges to laser signal in groove 13,14,15,16,25,26,27,28 in triangular base 12,29.
Step (4) utilizes external signal to change the output light path structure, obtains the compound Random Laser of polychrome.
On triangular base 12,29, one side is parallel arbitrarily with triangle for the groove 13,14,15,16,25,26,27 of etching, 28.
The groove 13,14,15,16,25,26,27 of etching, 28 is single groove or groove group.
Fill method adopts the spin-coating film method, and when wherein the mode by spin coating was filled in respectively the respective slot position with the quantum dot of different size, rotating speed was about 300r/min; When spin coating groove 25, triangular base is embedded on the rotor that is placed on as a whole sol evenning machine in the circular-base 30 that is carved with triangular groove carries out spin coating; When spin coating groove 26, triangular base is embedded on the rotor that is placed on as a whole sol evenning machine in the circular-base 32 that is carved with triangular groove carries out spin coating; When spin coating groove 27, triangular base is embedded on the rotor that is placed on as a whole sol evenning machine in the circular-base 34 that is carved with triangular groove carries out spin coating; When spin coating groove 28, triangular base is embedded on the rotor that is placed on as a whole sol evenning machine in the circular-base 36 that is carved with triangular groove carries out spin coating.
Condenser lens is cylindrical lens 8,9,10,11.
Fill etched recesses 13,14,15,16,25,26,27, at 28 o'clock, triangular base 12,29 is nested in the corresponding circular-base that is carved with triangular groove 30,32,34,36.
The preferred CdSe/ZnS nucleocapsid structure of quantum dot oil phase quantum dot.
Utilize machining/laser processing technology to etch groove on triangular base in step (1), preferred groove size is, wide 40 microns, 60 microns, 75 microns, 90 microns, 120 microns, dark 30 microns, 50 microns, 60 microns, 70 microns, 80 microns.
In step (3), at first the pump light of laser 1 outgoing passes through semi-transparent semi-reflecting lens 2,5,7 and speculum 3,4,6, pass through respectively again cylindrical lens 8,9,10,11, focus on groove 13,14,15,16 surfaces on triangular base 12, place one- way glass 17,18,19,20,21,22,23,24 along the direction of groove and carry out mixing of Multi Colour Lasers, control one- way glass 17,18,19,20 placement by external signal at last, collect outgoing along one- way glass 21,22,23,24 direction and mix laser signal.
The above is only the preferred embodiment of the present invention, should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also make some improvement, and these improvement also should be considered as protection scope of the present invention.
Claims (9)
1. compound Random Laser output intent of the polychrome based on the quantum dot size effect, it is characterized in that: the method comprises the steps:
Step (1) utilizes machining/laser processing technology to etch groove on triangular base, and wherein groove size is, and is wide 40～120 microns, and dark 30～80 microns, surface configuration is uneven;
Step (2) is filled in the inside grooves surface filming with quantum dot;
Step (3) reflexes to condenser lens by semi-transparent semi-reflecting lens and speculum with laser signal, and condenser lens converges to laser signal in groove in triangular base;
Step (4) utilizes external signal to change the output light path structure, obtains the compound Random Laser of polychrome.
2. the compound Random Laser output intent of the polychrome based on the quantum dot size effect according to claim 1 is characterized in that: described triangular base and circular-base adopt glass or metal material, both adopt identical material during use.
3. the compound Random Laser output intent of the polychrome based on the quantum dot size effect according to claim 1 is characterized in that: on described triangular base, the groove of etching is parallel on one side arbitrarily with triangle.
4. the compound Random Laser output intent of the polychrome based on the quantum dot size effect according to claim 1, it is characterized in that: the groove of described etching is single groove or groove group.
5. the compound Random Laser output intent of the polychrome based on the quantum dot size effect according to claim 1, it is characterized in that: described fill method is the spin-coating film method.
6. the compound Random Laser output intent of the polychrome based on the quantum dot size effect according to claim 1, it is characterized in that: described condenser lens is cylindrical lens.
7. the compound Random Laser output intent of the polychrome based on the quantum dot size effect according to claim 1, is characterized in that: during described filling groove, triangular base is nested in the corresponding circular-base that is carved with triangular groove.
8. the compound Random Laser output intent of the polychrome based on the quantum dot size effect according to claim 1, is characterized in that: described quantum dot use CdSe/ZnS nucleocapsid structure oil phase quantum dot.
9. the compound Random Laser output intent of the polychrome based on the quantum dot size effect according to claim 1, it is characterized in that: utilize machining/laser processing technology to etch groove on triangular base in described step (1), groove size is wide 60～80 microns, dark 45～60 microns.
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950122A (en) * | 2007-05-17 | 2011-01-19 | Prysm公司 | The multilayer screen that is used for scanning beam display systems with luminous zone |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950122A (en) * | 2007-05-17 | 2011-01-19 | Prysm公司 | The multilayer screen that is used for scanning beam display systems with luminous zone |
Non-Patent Citations (1)
| Title |
|---|
| YUJIE CHEN,..ETC: "colloidal quantum dot random laser", 《OPTICS EXPRESS》, vol. 19, no. 4, 14 February 2011 (2011-02-14), XP060035208, DOI: 10.1117/12.2039130 * |
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Application publication date: 20130605 |