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Day inferior the actual strength that shows Laser safety gla

The new light source that semiconductor laser regards the video equipment such as measuring projector, monitor and illume, car as headlamp gets attention fully. And want to be used at these utility, output power needs to achieve 1W above, realize “W namely (made of baked clay) the high power of class ” . Actual strength of laser of semiconductor of high power of present blue and green how? “LEDIA’15” of conference of glow component international waits in LED and semiconductor laser (international exhibition center of Pacific Ocean yokohama, in April 2015 22 ~ 24 days) go up, the well-known business day that produces the glow component such as LED and semiconductor laser inferior chemical industry and semiconductor of photoelectricity of German Ou Silang (OSRAM Opto Semiconductors) introduced achievement of respective newest research and development respectively. With successive oscillation of oscillation wavelengh 532nm, smooth output power exceeds 0.8W day inferior the green semiconductor laser that chemical industry introduced to use diametical Value= "9" Unitname= "mm" >9mm CAN to enclose and blue semiconductor laser. Respect of green semiconductor laser, day inferior the character of 3 kinds of products that chemistry introduced oscillation wavelengh to be 520nm, 525nm, 532nm. Among them, the character that 532nm tastes has concussion sex very much. 532nm is the wavelengh that green laser uses commonly. Not be by semiconductor component is sufferred directly commonly stimulate generation green laser, the infra-red laser that is wavelengh 1064nm through “SHG component ” however is changed into the laser of 532nm. Using semiconductor laser to launch a 532nm laser directly is very difficult. Blue and green semiconductor laser are the “ active that giving off light commonly the GaN that layer ” uses InGaN kind semiconductor laser. Day inferior the blue of chemical industry and green semiconductor laser also are such. When the green that the laser that uses InGaN changes growing wavelengh in will blue shade is smooth, can raise In composition to compare. This raises light very hard on the technology to output power. Day inferior the character that chemical industry improved green semiconductor laser, use oscillation wavelengh 532nm, in driving voltage (Vf) electric current of 4.72V, drive (If) Value= "1.6" Unitname= "a" >1.6A, room temperature (℃ of " >25 of ℃ of Value= "25" Unitname= " ) when the environment issues successive oscillation, the light that realized 0.87W outputs power. Although light outputs power to still be less than 1W, but in the green semiconductor laser that is 532nm in oscillation wavelengh already very tall. Additional, the green semiconductor laser that releases this used GaN kind the “c face ” with the crystal GaN that semiconductor laser uses commonly, namely ” of “ polarity face. Although this proof does not use the “ with the crystal GaN that raises green semiconductor laser easily to output power ” of face of polarity of ” of half polarity face and “ blame, also can obtain the light that approachs 1W to output power. Now, half polarity and the GaN substrate that are not polarity face are very small, improve manufacturing efficiency hard, because this reduces cost very hard. Accordingly, day inferior chemical industry chose C side. The glow efficiency “WPE of 532nm product (plug efficiency, smooth output power is divided with power input) ” is 11.5 % about. Threshold value electric current is Value= ".28" Unitname= "a" >0.28A, threshold value current density is 1.55kA/cm2. Additional, the look that 532nm wavelengh provides in place of “ITU-R BTvalue= ".202" Unitname= "”" >.2020” of colour gamut standard is standard wavelengh of green inside the country, because of this day inferior chemical industry thinks, changeover is opposite into 532nm wavelengh video equipment utility is crucial. The efficiency of 520nm product achieves 15 % above in addition, the character of 520nm product and 525nm product is as follows. 520nm product is in Vf4.56V, Ifvalue= "1.6" Unitname= "a" >1.6A, room temperature (℃ of " >25 of ℃ of Value= "25" Unitname= " ) below the environment, smooth output power achieves 1.22W. WPE is about 16.7 % . Threshold value electric current is Value= ".2" Unitname= "a" >0.2A, threshold value current density is 1.11kA/cm2. 525nm product is in Vf4.67V, Ifvalue= "1.6" Unitname= "a" >1.6A, room temperature (℃ of " >25 of ℃ of Value= "25" Unitname= " ) below the environment, smooth output power achieves 1.12W. At this moment WPE is about 15 % . The syntonic antrum length of laser (L) for Value= "1.2" Unitname= "mm" >1.2mm, bandwidth is spent (W) for 15μm. Threshold value electric current is Value= ".205" Unitname= "a" >0.205A, threshold value current density is 1.14kA/cm2. 525nm product already began to supply sample, the optical technology that and already was in held in October 2014 and relevant product are exhibited can exhibit on “InterOpto Value= "2014" Unitname= "”" >2014” (consult this station reports) . Published detailed performance data this. Day inferior the life that chemical industry still introduced green semiconductor laser. The time that if be exterior temperature gloriole of the oscillation when ℃ of " >60 of ℃ of Value= "60" Unitname= " ,exports power halve serves as life, so the life of 525nm product is 5000 hours 20 thousand. The result that secures the “ACC” drive in Value= "1.6" Unitname= "a" >1.6A 1000 hours according to using drive electricity concludes this. The smooth output power of blue semiconductor laser reachs side of laser of 4W blue semiconductor, day inferior chemical industry announced the 4W that developing (when successive oscillation) the performance data of the product. The smooth output power of the blue semiconductor laser that developed 2013 is 3.5W, the output power of new product raised 10 % above. The oscillation wavelengh of 4W product is 455nm, in Vf4.2V, Ifvalue= "2.5" Unitname= "a" >2.5A, room temperature (℃ of " >25 of ℃ of Value= "25" Unitname= " ) below the environment, smooth output power is 4.1W. At this moment WPE is about 39 % . The syntonic antrum length of laser (L) for Value= "1.2" Unitname= "mm" >1.2mm, bandwidth is spent (W) for 35μm. Threshold value electric current is Value= ".286" Unitname= "a" >0.286A, threshold value current density is 0.68kA/cm2. Day inferior the life that chemical industry still announced blue semiconductor laser. The time that if be exterior temperature gloriole of the oscillation when ℃ of " >60 of ℃ of Value= "60" Unitname= " ,exports power halve serves as life, so the life of blue semiconductor laser is 5000 hours 20 thousand. The semiconductor of Si Langguang report of 5 times much Europe that cost is LED showed the newest research gain of blue semiconductor laser. The room temperature that is Value= "3" Unitname= "a" >3A in drive electric current (℃ of " >25 of ℃ of Value= "25" Unitname= " ) below the environment, smooth output power is make an appointment with 4.1W. At this moment WPE is about 35 % . The some of product of laser of semiconductor of high power blue of this company already was used by car headlamp. Henceforth, outside dividing car headlamp, want to be used generally in all illume, want to improve performance not only, reduce cost even. For instance, compare with the photograph of white LED illume of 5000lm, spend the brilliance that 1 dollar cost can achieve, LED exceeds 500lm, and blue semiconductor laser is less than 100lm. That is to say, want to obtain same Lm value, the cost that blue semiconductor laser costs is LED 5 times much.
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