CN103644534B - A kind of reddish blue laser plant lamp - Google Patents
A kind of reddish blue laser plant lamp Download PDFInfo
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims 4
- 229910052744 lithium Inorganic materials 0.000 claims 4
- 239000002253 acid Substances 0.000 claims 2
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- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims 2
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- 230000029553 photosynthesis Effects 0.000 description 4
- 238000010672 photosynthesis Methods 0.000 description 4
- WYOHGPUPVHHUGO-UHFFFAOYSA-K potassium;oxygen(2-);titanium(4+);phosphate Chemical compound [O-2].[K+].[Ti+4].[O-]P([O-])([O-])=O WYOHGPUPVHHUGO-UHFFFAOYSA-K 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
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- GQYHUHYESMUTHG-UHFFFAOYSA-N lithium niobate Chemical compound [Li+].[O-][Nb](=O)=O GQYHUHYESMUTHG-UHFFFAOYSA-N 0.000 description 3
- 229910019655 synthetic inorganic crystalline material Inorganic materials 0.000 description 3
- JNDMLEXHDPKVFC-UHFFFAOYSA-N aluminum;oxygen(2-);yttrium(3+) Chemical compound [O-2].[O-2].[O-2].[Al+3].[Y+3] JNDMLEXHDPKVFC-UHFFFAOYSA-N 0.000 description 2
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- 229910019901 yttrium aluminum garnet Inorganic materials 0.000 description 2
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Abstract
本发明属于植物生长设备技术领域，涉及一种红蓝色激光植物灯，激光增益晶体与激光器固定连接，激光器泵浦激光增益晶体产生激光振荡；激光增益晶体的一端放置有倍频晶体，另一端放置有合频晶体；倍频晶体的输出端放置有第一激光腔镜片，合频晶体的输出端放置有第二激光腔镜片；第一扩束器放置在第一激光腔镜片的输出端；第二扩束器放置在第二激光腔镜片的输出端；其结构简单，光照空间大，范围广，同时输出红色和蓝色激光，光谱范围宽，输出能量大，节能高效，光照范围和光功率大小可调。
The invention belongs to the technical field of plant growth equipment, and relates to a red and blue laser plant lamp. A laser gain crystal is fixedly connected to a laser, and the laser is pumped by the laser gain crystal to generate laser oscillation. A frequency doubling crystal is placed at one end of the laser gain crystal, and a A frequency combining crystal is placed; the output end of the frequency doubling crystal is placed with a first laser cavity lens, and the output end of the frequency combining crystal is placed with a second laser cavity lens; the first beam expander is placed at the output end of the first laser cavity lens; The second beam expander is placed at the output end of the second laser cavity mirror; it has a simple structure, a large illumination space, and a wide range, and simultaneously outputs red and blue lasers, with a wide spectral range, large output energy, energy saving and high efficiency, and excellent illumination range and optical power. Adjustable size.
Description
技术领域：Technical field:
本发明属于植物生长设备技术领域，涉及一种促进植物生长的红、蓝色植物灯，特别是一种红蓝色激光植物灯。The invention belongs to the technical field of plant growth equipment, and relates to a red and blue plant lamp for promoting plant growth, in particular to a red and blue laser plant lamp.
背景技术：Background technique:
植物要依靠太阳光的能量进行光合作用而生长、开花、结果，太阳光谱为连续光谱，包含了400～760nm的所有波长，不同波长的光线对植物光合作用的影响是不同的，其中400～520nm的蓝色光和610～720nm红色光对于光合作用贡献最大，520～610nm的绿色光，被植物色素吸收的比率很低。研究表明红光与蓝光的光谱能量分布与叶绿素吸收光谱一致，红、蓝光组合能极大促进植物的光合作用，提高植物的生长和发育。目前，尚未见有能同时输出红色和蓝色激光的激光植物灯的公开使用和相关报道。Plants rely on the energy of sunlight for photosynthesis to grow, bloom, and bear fruit. The solar spectrum is a continuous spectrum, including all wavelengths from 400 to 760nm. Light of different wavelengths has different effects on plant photosynthesis, among which 400 to 520nm The blue light of 520-610nm and the red light of 610-720nm contribute the most to photosynthesis, and the ratio of green light of 520-610nm absorbed by plant pigments is very low. Studies have shown that the spectral energy distribution of red light and blue light is consistent with the absorption spectrum of chlorophyll. The combination of red and blue light can greatly promote the photosynthesis of plants and improve the growth and development of plants. At present, there is no public use and related reports of laser plant lights that can output red and blue lasers at the same time.
发明内容：Invention content:
本发明的目的在于克服现有技术存在的缺点，寻求设计提供一种红蓝色植物激光灯，同时输出红色和蓝色激光，光谱范围宽，输出能量大，节能高效，光照范围和光功率大小可调。The purpose of the present invention is to overcome the shortcomings of the prior art, and seek to design and provide a red and blue plant laser lamp, which outputs red and blue lasers at the same time, has a wide spectral range, large output energy, energy saving and high efficiency, and the illumination range and optical power can be adjusted. Tune.
为了实现上述目的，本发明的主体结构包括第一激光腔镜片、第二激光腔镜片、激光增益晶体、激光器、倍频晶体、合频晶体、第一扩束器和第二扩束器；激光增益晶体与激光器固定连接，激光器泵浦激光增益晶体，产生1318nm～1440nm激光振荡；激光增益晶体的一端放置有倍频晶体，另一端放置有合频晶体；倍频晶体的输出端放置有第一激光腔镜片，合频晶体的输出端放置有第二激光腔镜片；倍频晶体对激光增益晶体产生的激光进行倍频，实现609～720nm波段的红光；合频晶体对剩余的近红外光和红光进行合频，实现439～480nm波段的蓝光；第一激光腔镜片输出红光，第二激光腔镜片输出蓝光；第一扩束器放置在第一激光腔镜片的输出端，放大第一激光腔镜片输出的红光；第二扩束器放置在第二激光腔镜片的输出端，放大第二激光腔镜片输出的蓝光，以扩大光照范围；各部件之间的距离根据实际需要设置。In order to achieve the above object, the main structure of the present invention includes a first laser cavity mirror, a second laser cavity mirror, a laser gain crystal, a laser, a frequency doubling crystal, a frequency combining crystal, a first beam expander and a second beam expander; The gain crystal is fixedly connected to the laser, and the laser pumps the laser gain crystal to generate 1318nm-1440nm laser oscillation; one end of the laser gain crystal is placed with a frequency doubling crystal, and the other end is placed with a frequency combining crystal; the output end of the frequency doubling crystal is placed with a first The laser cavity lens, the output end of the combined frequency crystal is placed with a second laser cavity lens; the frequency doubling crystal doubles the frequency of the laser generated by the laser gain crystal to realize the red light in the 609-720nm band; the frequency combined crystal controls the remaining near-infrared light Combine frequency with red light to realize blue light in the 439-480nm band; the first laser cavity lens outputs red light, and the second laser cavity lens outputs blue light; the first beam expander is placed at the output end of the first laser cavity lens to amplify the second The red light output by the lens of the first laser cavity; the second beam expander is placed at the output end of the lens of the second laser cavity to amplify the blue light output by the lens of the second laser cavity to expand the illumination range; the distance between the components is set according to actual needs .
本发明涉及的第一激光腔镜片为HR1318nm～1440nm&HT609～720nm镀膜的激光腔镜片，第二激光腔镜片为HR1318nm～1440nm&HT439～480nm镀膜的激光腔镜片，激光增益晶体为掺钕钇铝石榴石（Nd:YAG）激光增益晶体，激光器为半导体激光器、光纤激光器或全固态激光器，激光器的输出波长为808nm或880nm；倍频晶体为啁啾结构的准位相匹配铌酸锂晶体（PPLN）、准位相匹配鉭酸锂晶体（PPLT）或准位相匹配磷酸氧钛钾晶体（PPKTP），倍频晶体的倍频波长为1318nm～1440nm；合频晶体为啁啾结构的准位相匹配铌酸锂晶体（PPLN）、准位相匹配鉭酸锂晶体（PPLT）和准位相匹配磷酸氧钛钾晶体（PPKTP）中的一种，合频晶体的合频波长为1318nm～1440nm&609～720nm。The first laser cavity lens involved in the present invention is HR1318nm～1440nm&HT609～720nm coated laser cavity lens, the second laser cavity lens is HR1318nm～1440nm&HT439～480nm coated laser cavity lens, and the laser gain crystal is neodymium-doped yttrium aluminum garnet (Nd :YAG) laser gain crystal, the laser is a semiconductor laser, a fiber laser or an all-solid-state laser, and the output wavelength of the laser is 808nm or 880nm; Lithium tantalate crystal (PPLT) or quasi-phase-matched potassium titanyl phosphate crystal (PPKTP), the frequency doubling wavelength of the frequency-doubling crystal is 1318nm~1440nm; the frequency-combining crystal is quasi-phase-matched lithium niobate crystal (PPLN) , One of quasi-phase-matched lithium tantalate crystal (PPLT) and quasi-phase-matched potassium titanyl phosphate crystal (PPKTP). The combined frequency wavelength of the combined frequency crystal is 1318nm～1440nm&609～720nm.
本发明涉及的激光器和扩束器或安装在活动装置上，能增设透镜和反射镜装置，扩大激光束的照射空间，控制激光束的光照范围。The laser and the beam expander involved in the present invention may be installed on a movable device, and lens and reflector devices can be added to expand the irradiation space of the laser beam and control the irradiation range of the laser beam.
本发明涉及的红光和蓝光能从两个激光腔镜片分别输出，也能从一个激光腔镜片输出；扩束器上能涂覆荧光粉，获得其它波长的荧光。The red light and blue light involved in the invention can be output from two laser cavity mirrors respectively, and can also be output from one laser cavity mirror; the beam expander can be coated with fluorescent powder to obtain fluorescence of other wavelengths.
本发明与现有技术相比，其结构简单，光照空间大，范围广，同时输出红色和蓝色激光，光谱范围宽，输出能量大，节能高效，光照范围和光功率大小可调。Compared with the prior art, the present invention has simple structure, large illumination space and wide range, simultaneously outputs red and blue lasers, wide spectral range, large output energy, energy saving and high efficiency, and adjustable illumination range and optical power.
附图说明：Description of drawings:
图1为本发明的主体结构原理示意图。Fig. 1 is a schematic diagram of the principle of the main structure of the present invention.
图2为本发明实施例1的主体结构原理示意图，其中包括第一激光腔镜片R1、第二激光腔镜片R2、激光增益晶体A、激光器B、倍频晶体C、合频晶体D、第一聚焦透镜L1、第二聚焦透镜L2、第三聚焦透镜L3、第四聚焦透镜L4、第一凸面反射镜G和第二凸面反射镜H。Figure 2 is a schematic diagram of the principle of the main structure of Embodiment 1 of the present invention, which includes the first laser cavity lens R1, the second laser cavity lens R2, the laser gain crystal A, the laser B, the frequency doubling crystal C, the frequency combining crystal D, the first A focus lens L1, a second focus lens L2, a third focus lens L3, a fourth focus lens L4, a first convex mirror G, and a second convex mirror H.
具体实施方式：detailed description:
下面通过实施例并结合附图作进一步说明。Further description will be given below through the embodiments and in conjunction with the accompanying drawings.
本实施例的主体结构包括第一激光腔镜片R1、第二激光腔镜片R2、激光增益晶体A、激光器B、倍频晶体C、合频晶体D、第一扩束器M1和第二扩束器M2；激光增益晶体A与激光器B固定连接，激光器B泵浦激光增益晶体，产生1318nm～1440nm激光振荡；激光增益晶体A的一端放置有倍频晶体C，另一端放置有合频晶体D；倍频晶体C的输出端放置有第一激光腔镜片R1，合频晶体D的输出端放置有第二激光腔镜片R2；倍频晶体C对激光增益晶体A产生的激光进行倍频，实现609～720nm波段的红光；合频晶体D对剩余的近红外光和红光进行合频，实现439～480nm波段的蓝光；第一激光腔镜片R1输出红光，第二激光腔镜片R2输出蓝光；第一扩束器M1放置在第一激光腔镜片R1的输出端，放大第一激光腔镜片R1输出的红光；第二扩束器M2放置在第二激光腔镜片R2的输出端，放大第二激光腔镜片R2输出的蓝光，以扩大光照范围；各部件之间的距离根据实际需要设置。The main structure of this embodiment includes the first laser cavity mirror R1, the second laser cavity mirror R2, the laser gain crystal A, the laser B, the frequency doubling crystal C, the frequency combining crystal D, the first beam expander M1 and the second beam expander Laser gain crystal A is fixedly connected with laser B, and laser gain crystal is pumped by laser B to generate 1318nm-1440nm laser oscillation; one end of laser gain crystal A is placed with frequency doubling crystal C, and the other end is placed with frequency combining crystal D; The output end of the frequency doubling crystal C is placed with the first laser cavity mirror R1, and the output end of the frequency combining crystal D is placed with the second laser cavity mirror R2; the frequency doubling crystal C doubles the frequency of the laser generated by the laser gain crystal A to achieve 609 Red light in the band of ~720nm; frequency combining crystal D combines the remaining near-infrared light and red light to realize blue light in the band of 439-480nm; the first laser cavity lens R1 outputs red light, and the second laser cavity lens R2 outputs blue light ; The first beam expander M1 is placed on the output end of the first laser cavity mirror R1 to amplify the red light output by the first laser cavity mirror R1; the second beam expander M2 is placed on the output end of the second laser cavity mirror R2 to amplify The blue light output by the second laser cavity lens R2 is used to expand the illumination range; the distance between the components is set according to actual needs.
本实施例涉及的第一激光腔镜片R1为HR1318nm～1440nm&HT609～720nm镀膜的激光腔镜片，第二激光腔镜片R2为HR1318nm～1440nm&HT439～480nm镀膜的激光腔镜片，激光增益晶体A为掺钕钇铝石榴石（Nd:YAG）激光增益晶体，激光器B为半导体激光器、光纤激光器或全固态激光器，激光器B的输出波长为808nm或880nm；倍频晶体C为啁啾结构的准位相匹配铌酸锂晶体（PPLN）、准位相匹配鉭酸锂晶体（PPLT）或准位相匹配磷酸氧钛钾晶体（PPKTP），倍频晶体C的倍频波长为1318nm～1440nm；合频晶体D为啁啾结构的准位相匹配铌酸锂晶体（PPLN）、准位相匹配鉭酸锂晶体（PPLT）和准位相匹配磷酸氧钛钾晶体（PPKTP）中的一种，合频晶体D的合频波长为1318nm～1440nm&609～720nm。The first laser cavity lens R1 involved in this embodiment is HR1318nm～1440nm&HT609～720nm coated laser cavity lens, the second laser cavity lens R2 is HR1318nm～1440nm&HT439～480nm coated laser cavity lens, and the laser gain crystal A is neodymium-doped yttrium aluminum Garnet (Nd:YAG) laser gain crystal, laser B is semiconductor laser, fiber laser or all-solid-state laser, the output wavelength of laser B is 808nm or 880nm; frequency doubling crystal C is quasi-phase-matched lithium niobate crystal with chirped structure (PPLN), quasi-phase-matched lithium tantalate crystal (PPLT) or quasi-phase-matched potassium titanyl phosphate crystal (PPKTP), the frequency doubling wavelength of frequency doubling crystal C is 1318nm~1440nm; Phase-matched lithium niobate crystal (PPLN), quasi-phase-matched lithium tantalate crystal (PPLT) and quasi-phase-matched potassium titanyl phosphate crystal (PPKTP), the combined frequency wavelength of the combined frequency crystal D is 1318nm～1440nm&609～ 720nm.
本实施例涉及的激光器和扩束器或安装在活动装置上，能增设透镜和反射镜装置，扩大激光束的照射空间，控制激光束的光照范围。The laser and the beam expander involved in this embodiment may be installed on a movable device, and lens and mirror devices can be added to expand the irradiation space of the laser beam and control the irradiation range of the laser beam.
实施例1：Example 1:
本实施例的激光增益晶体A采用Nd:YAG模块，激光器B采用输出波长为880nm的半导体激光器，第一激光腔镜片R1为曲率半径200mm的平凹镜，镀膜参数为HR1318nm～1440nm&HT609～720nm；第二激光腔镜片R2为曲率半径300mm的平凹镜，镀膜参数为HR1318nm～1440nm&HT439～480nm，第一激光腔镜片R1和第二激光腔镜片R2之间的距离为400mm，倍频晶体C为PPLN，合频晶体D为PPKTP，第一聚焦透镜L1和第三聚焦透镜均L3为焦距30mm的聚焦透镜，第二聚焦透镜L2为焦距200mm的聚焦透镜，第四聚焦透镜L4为1000mm的聚焦透镜，第一聚焦透镜L1和第二聚焦透镜L2之间的距离为230mm，第三聚焦透镜L3和第四聚焦透镜L4之间的距离为1030mm，第二聚焦透镜L2的外侧设置有镀膜HR609～720nm的凸面反射镜G，第四聚焦透镜L4外侧设置有镀膜HR439～480nm的凸面反射镜H，获得近180度的光照范围。The laser gain crystal A of this embodiment adopts a Nd:YAG module, and the laser B adopts a semiconductor laser with an output wavelength of 880nm. The first laser cavity lens R1 is a plano-concave mirror with a radius of curvature of 200mm, and the coating parameters are HR1318nm～1440nm&HT609～720nm; The second laser cavity mirror R2 is a plano-concave mirror with a curvature radius of 300mm. The coating parameters are HR1318nm~1440nm&HT439~480nm. The distance between the first laser cavity mirror R1 and the second laser cavity mirror R2 is 400mm. The frequency doubling crystal C is PPLN. The combined frequency crystal D is PPKTP, the first focusing lens L1 and the third focusing lens L3 are focusing lenses with a focal length of 30mm, the second focusing lens L2 is a focusing lens with a focal length of 200mm, and the fourth focusing lens L4 is a focusing lens with a focal length of 1000mm. The distance between the first focusing lens L1 and the second focusing lens L2 is 230mm, the distance between the third focusing lens L3 and the fourth focusing lens L4 is 1030mm, and the outer side of the second focusing lens L2 is provided with a convex surface with coating HR609~720nm Reflector G, convex reflector H coated with HR439-480nm is arranged on the outside of the fourth focusing lens L4 to obtain an illumination range of nearly 180 degrees.
本实施例通过调节激光器B的泵浦功率，控制红蓝激光的输出功率，避免过高或者太少的光照强度；调节凸面反射镜G和H的角度，能任意调节红、蓝色激光的光照范围。In this embodiment, by adjusting the pumping power of the laser B, the output power of the red and blue lasers is controlled to avoid too high or too little light intensity; the angles of the convex mirrors G and H can be adjusted to arbitrarily adjust the light of the red and blue lasers scope.
Claims (3)
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| CN104407647A (en) * | 2014-10-31 | 2015-03-11 | 中国农业大学 | Light supplement system and method for greenhouse |
| CN104737841A (en) * | 2015-03-05 | 2015-07-01 | 中国农业科学院农业环境与可持续发展研究所 | Plant-cultivating method after laser-beam divergence |
| CN108631148A (en) * | 2017-12-19 | 2018-10-09 | 嘉兴迪迈科技有限公司 | A kind of red and blue laser plant lamp |
| CN108386765A (en) * | 2018-04-12 | 2018-08-10 | 中国科学技术大学先进技术研究院 | A portable laser supplementary light system |
| CN110771379A (en) * | 2019-11-19 | 2020-02-11 | 温州大学新材料与产业技术研究院 | Laser plant lamp capable of irradiating 180-degree overall and application method thereof |
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| US6613042B1 (en) * | 2000-06-30 | 2003-09-02 | Nikolai Tankovich | Rainbow laser |
| CN101533989A (en) * | 2009-04-21 | 2009-09-16 | 厦门大学 | Laser diode pumping red green blue full-solid laser |
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| US9207377B2 (en) * | 2012-01-20 | 2015-12-08 | Matthew Overturf | Artificial lighting system |
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| US6613042B1 (en) * | 2000-06-30 | 2003-09-02 | Nikolai Tankovich | Rainbow laser |
| CN101533989A (en) * | 2009-04-21 | 2009-09-16 | 厦门大学 | Laser diode pumping red green blue full-solid laser |
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