CN104007496B - A kind of photonic crystal filtering eyeglass and preparation method thereof - Google Patents
A kind of photonic crystal filtering eyeglass and preparation method thereof Download PDFInfo
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- CN104007496B CN104007496B CN201410210549.3A CN201410210549A CN104007496B CN 104007496 B CN104007496 B CN 104007496B CN 201410210549 A CN201410210549 A CN 201410210549A CN 104007496 B CN104007496 B CN 104007496B
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Abstract
A kind of photonic crystal filtering eyeglass, described photonic crystal filtering eyeglass comprises flat glass substrate and is plated in the crystal film with photon of flat glass substrate one side, described crystal film with photon is made up of bottom, intermediate layer and skin, bottom is alternately laid by cadmium-telluride layer, silicon dioxide layer, intermediate layer is tantalum pentoxide layer, tantalum pentoxide layer is connected with the silicon dioxide layer of bottom, and outer and bottom is symmetrical arranged. The present invention is according to the light source needs of the specific wavelength of the cancer such as Hepatoma therapy, cancer of the stomach, based on photonic crystal, theoretical research goes out best photonic crystal periodic structure and photonic crystal thicknesses of layers, this kind of photonic crystal filtering eyeglass can only allow the near infrared light of 980nm pass through, greatly improve the excitation of light irradiation, and optical transmission rate also reaches more than 99%; This photonic crystal filtering eyeglass is embedded in to the output port of the light source of photodynamic therapeutic instrument, has shortened the treatment time of photodynamic therapeutic instrument, improve the result for the treatment of to the cancer such as liver cancer, cancer of the stomach.
Description
Technical field
The present invention relates to photonic crystal field, specifically a kind of photonic crystal filtering eyeglass and preparation method thereof.
Background technology
Chinese mugwort on market draws photodynamic therapeutic instrument can be used for the treatment of the disease such as carcinoma of urinary bladder, carcinoma of mouth, have wound little, safe and efficient, recover the feature such as fast, for patient has brought a kind of brand-new ideal treatment scheme. But the radiation source that the photodynamic therapeutic instrument occurring in the market uses adopts semiconductor laser transmitter mostly, and the light of ejaculation often contains the light of multiple wave band, and light also has many losses in the time propagating. Although adopt the light irradiation obtaining in this way and also can reach the object for the treatment of, but because the excitation of the light irradiation obtaining is not high, the utilization rate of light is not high, and optical transmission rate is not high yet, thereby the time that need to grow when cancer in treatment, have a strong impact on the efficiency for the treatment of of cancer.
At present, Wenzhou Medical College's supplementary eye Shi Guang hospital has been used the ruddiness of 690nm in the treatment of the CNV of high myopic eye, to obtain good effect. Harbin Institute of Technology's condensed state science and technology research center finds that the ruddiness of about 630nm can be used for the treatment of nasopharyngeal carcinoma, head and neck neoplasm, brain tumor etc., and be applied to clinical in, and obtained good effect. Found by correlative study, if irradiation light wavelength is 630nm, the degree of depth < 0.5cm of penetrate tissue; If wavelength is 700nm, the degree of depth just approaches 0.8cm; And 800nm wavelength light can reach 1cm, photodynamic therapeutic instrument is mainly used to treat to the canceration of the internal organs such as some livers, stomach, the light irradiation the adopting near infrared light best results that is 980nm. Therefore find a kind of lens materials of a large amount of transmissions of near infrared light that can allow 980nm become the most important thing of dealing with problems.
Photonic crystal is the novel optical fine structure material that a kind of dielectric constant changes with space periodicity. From crystal structure, the atom of crystals is periodically ordered arrangement, the just existence of this cycle potential field, make the electronics of motion be subject to the Bragg diffraction of cycle potential field, thereby, may there is band gap, i.e. photon band gap between band and band in formation band structure. The outstanding feature of photonic crystal is to suppress some frequency electromagnetic wave, produces forbidden photon band, realizes the good filtering performance to light.
Summary of the invention
The object of the invention is the deficiency for solving the problems of the technologies described above, a kind of photonic crystal filtering eyeglass and preparation method thereof is provided, this photonic crystal filtering eyeglass can specifically allow a large amount of transmissions of near infrared light of 980nm.
The present invention for solving the problems of the technologies described above adopted technical scheme is: a kind of photonic crystal filtering eyeglass, comprise flat glass substrate and the crystal film with photon that is plated in flat glass substrate one side, described crystal film with photon is by bottom, intermediate layer and outer formation, described bottom and outer by the cadmium-telluride layer being arranged alternately and silicon dioxide layer formation, and bottom and outer field symmetrical configuration, in described bottom, the one deck in close intermediate layer is silicon dioxide layer, one deck of the most close flat glass substrate is cadmium-telluride layer, described intermediate layer is tantalum pentoxide layer, the one deck joining with intermediate layer in skin is silicon dioxide layer.
The preparation method of photonic crystal filtering eyeglass, comprises the following steps:
Step 1: process plate glass that a thickness is 36mm as substrate, two-sided and stile carries out polishing to substrate, in substrate surrounding processing technology chamfering;
Step 2: adopt acidic cleaning solution and deionized water respectively substrate surface to be cleaned to processing, then substrate is positioned on hot plate and is dried, hot plate temperature is set to 65 DEG C, and drying time is 10 minutes;
Step 3: substrate is put into vacuum coating equipment, and at upper surface plating one deck cadmium telluride film of substrate, coating film thickness is 91.1nm, is dried cooling 30 minutes after plated film; Then above cadmium telluride film, plate layer of silicon dioxide film, coating film thickness is 167.8nm, after plated film, is dried cooling 30 minutes;
Step 4: repeat 4 times according to the method for step 3;
Step 5: plate one deck tantalum pentoxide film above the substrate silicon dioxide film after step 4 completes, coating film thickness is 233.3nm, is dried cooling 30 minutes after plated film;
Step 6: plate layer of silicon dioxide film on tantalum pentoxide film, coating film thickness is 167.8nm, is dried cooling 30 minutes after plated film; Then above silicon dioxide film, plate one deck cadmium telluride film, coating film thickness is 91.1nm again, after plated film, is dried cooling 30 minutes;
Step 7: repeat 4 times according to the method for step 6, plated film completes.
The invention has the beneficial effects as follows: the present invention is according to the light source needs of the specific wavelength of the cancer such as Hepatoma therapy, cancer of the stomach, based on the suitable dielectric material cadmium telluride of the theoretical selection of photonic crystal and silica as photonic crystal periodic structure medium, and the tantalum pentoxide layer that adulterates, work out best photonic crystal periodic structure and photonic crystal thicknesses of layers, this kind of photonic crystal filtering eyeglass can only allow the near infrared light of 980nm pass through, greatly improve the excitation of light irradiation, and optical transmission rate also reaches more than 99%; This photonic crystal filtering eyeglass is embedded in to the output port of the light source of photodynamic therapeutic instrument, has shortened the treatment time of photodynamic therapeutic instrument, improve the result for the treatment of to the cancer such as liver cancer, cancer of the stomach.
Brief description of the drawings
Fig. 1 is the structural representation of crystal film with photon.
Fig. 2 is the spectrum analysis figure of the light irradiation of the photodynamic therapeutic instrument of application photonic crystal filtering eyeglass.
Mark in figure: 1, cadmium-telluride layer, 2, silicon dioxide layer, 3, tantalum pentoxide layer.
Detailed description of the invention
A kind of photonic crystal filtering eyeglass, described photonic crystal filtering eyeglass comprises flat glass substrate and is plated in the crystal film with photon of flat glass substrate one side, described crystal film with photon is three-decker, bottom is alternately laid by cadmium-telluride layer 1, silicon dioxide layer 2, intermediate layer is tantalum pentoxide layer 3, tantalum pentoxide layer 3 is connected with the silicon dioxide layer 2 of bottom, and outer and bottom is symmetrical arranged.
The preparation method of photonic crystal filtering eyeglass comprises the following steps:
Step 1: process plate glass that a thickness is 36mm as substrate, two-sided and stile carries out polishing to substrate, in substrate surrounding processing technology chamfering;
Step 2: adopt acidic cleaning solution and deionized water respectively substrate surface to be cleaned to processing, then substrate is positioned on hot plate and is dried, hot plate temperature is set to 65 DEG C, and drying time is 10 minutes;
Step 3: substrate is put into vacuum coating equipment, and at upper surface plating one deck cadmium telluride film of substrate, coating film thickness is 91.1nm, is dried cooling 30 minutes after plated film; Then above cadmium telluride film, plate layer of silicon dioxide film, coating film thickness is 167.8nm, after plated film, is dried cooling 30 minutes;
Step 4: repeat 4 times according to the method for step 3;
Step 5: plate one deck tantalum pentoxide film above the substrate silicon dioxide film after step 4 completes, coating film thickness is 233.3nm, is dried cooling 30 minutes after plated film;
Step 6: plate layer of silicon dioxide film on tantalum pentoxide film, coating film thickness is 167.8nm, is dried cooling 30 minutes after plated film; Then above silicon dioxide film, plate one deck cadmium telluride film, coating film thickness is 91.1nm again, after plated film, is dried cooling 30 minutes;
Step 7: repeat 4 times according to the method for step 6, plated film completes.
To using photodynamic therapeutic instrument of the present invention to carry out emulation experiment, its spectrum analysis result as shown in Figure 2. As can be seen from the figure, in the light of wave-length coverage in 800-1250nm, the transmissivity of the near infrared light of 980nm is the highest, is 0.9914, greatly improves excitation and the transmissivity of light irradiation.
Claims (2)
1. a photonic crystal filtering eyeglass, it is characterized in that: photonic crystal filtering eyeglass comprises flat glass substrate and is plated in the crystal film with photon of flat glass substrate one side, described crystal film with photon is by bottom, intermediate layer and outer formation, described bottom and outer by the cadmium-telluride layer being arranged alternately (1) and silicon dioxide layer (2) formation, and bottom and outer field symmetrical configuration, in described bottom, the one deck in close intermediate layer is silicon dioxide layer (2), one deck of the most close flat glass substrate is cadmium-telluride layer (1), described intermediate layer is tantalum pentoxide layer (3), the one deck joining with intermediate layer in skin is silicon dioxide layer (2).
2. the preparation method of a kind of photonic crystal filtering eyeglass as claimed in claim 1, is characterized in that: comprise the following steps:
Step 1: process plate glass that a thickness is 36mm as substrate, two-sided and stile carries out polishing to substrate, in substrate surrounding processing technology chamfering;
Step 2: adopt acidic cleaning solution and deionized water respectively substrate surface to be cleaned to processing, then substrate is positioned on hot plate and is dried, hot plate temperature is set to 65 DEG C, and drying time is 10 minutes;
Step 3: substrate is put into vacuum coating equipment, and at upper surface plating one deck cadmium telluride film of substrate, coating film thickness is 91.1nm, is dried cooling 30 minutes after plated film; Then above cadmium telluride film, plate layer of silicon dioxide film, coating film thickness is 167.8nm, after plated film, is dried cooling 30 minutes;
Step 4: repeat 4 times according to the method for step 3;
Step 5: plate one deck tantalum pentoxide film above the substrate silicon dioxide film after step 4 completes, coating film thickness is 233.3nm, is dried cooling 30 minutes after plated film;
Step 6: plate layer of silicon dioxide film on tantalum pentoxide film, coating film thickness is 167.8nm, is dried cooling 30 minutes after plated film; Then above silicon dioxide film, plate one deck cadmium telluride film, coating film thickness is 91.1nm again, after plated film, is dried cooling 30 minutes;
Step 7: repeat 4 times according to the method for step 6, plated film completes.
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| CN109031519B (en) * | 2018-07-28 | 2019-07-05 | 中国地质大学（北京） | A kind of narrow-band optical filter and all-optical diode |
| CN110361802A (en) * | 2019-07-08 | 2019-10-22 | 武汉敏芯半导体股份有限公司 | A kind of 1-D photon crystal filter |
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| EP2132781A2 (en) * | 2006-11-02 | 2009-12-16 | Guardian Industries Corp. | Front electrode for use in photovoltaic device and method of making same |
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