02.04.2012 m anual g081pu series 1 of 10 manual of 80 8nm fiber coupled laser diode module g081pu1600m g081pu1750m g081pu11500m g081pu25w g081pu210w g081pu315w g081pu3 25w
02.04.2012 m anual g081pu series 2 of 10 1 introduction thank you for choosing this high power f iber c oupled laser diode for your application. please read th at manual carefully before using this product. if there is any question about this manual, please contact us. the 808nm series high power f iber c oupled laser diodes with optimized qw structure have a high reliability, high performance. the mocvd technica l is used for epitaxy to get a high quality epi - wafer. the 808nm series high power f iber c oupled laser diode module can get up to 25w m ultimode f iber c oupled output at cw and n.a. 0.12 & 0.22 . it can be applied in a wide field such as laser pumps, medical, target designator, free - space communication.
02.04.2012 m anual g081pu series 3 of 10 2 specifications optical and electrical specification type g081pu 1600m g081pu 1750m g081pu 11500m g081pu 25w g081pu 210w g081pu 315w g081pu 325w o ptical specification rated o utput optical power p f * (w) 0.6 0.7 5 1.5 5 10 12 25 central wavelength c * (nm) 808 808 808 808 808 808 808 central wavelength c * (nm) 800 - 820 800 - 820 800 - 820 800 - 820 800 - 820 800 - 820 800 - 820 central wavelength tolerance (nm) <4 <4 <4 <5 <5 <7(4) <7(4) wavelength temperature coefficient (nm/c) 0.3 0.3 0.3 0.3 0.3 0.3 0.3 fiber specification fiber core size (m) 50 100 100 400 400 700 700 n . a. 0.22 0.22 (0.12) 0.22 0.22 (0.12) 0.22 0.12 0.22 fiber length (m) 1 1 1 1 1 1 1 connector fc/st/sma - 905 e lectrical specification threshold current i th * (ma) 250 250 500 250 500 250 500 operating current i o (ma) 1250 1250 2500 1250 2500 1250 2500 operating voltage v f * (v) <2 <2 <2 <14 <14 <35 <35 slope efficiency e s * (w/a) >0.6 >0.75 >0.75 >5 >5 >12 >12 resistance r d * ( ) <0.2 <0.2 <0.2 <1.4 < 1.4 <3.5 <3.5 package p1 - package p2 - package p3 - package reverse voltage v r (v) 2 2 2 14 14 35 35 operating temperature t o (c) - 10...45 - 10...45 - 10...45 - 10...45 - 10...45 - 10...45 - 10...45 storage temperature t stg (c) - 40...70 - 40...70 - 40. ..70 - 40...70 - 40...70 - 40...70 - 40...70 parameter notes: * rated o utput optical power p f : laser diode output power rating. * central wavelength c & spectral width ? : while the laser diode is at its r ated output optical power, the wavelength at its emission spectrum curve with highest relative strengths is the central wavelength c , the wavelength width between 1/2 highest strength s of both sides of the emission spectrum is ? . * threshold current i th : current when laser diode begins las ing. * operating current i o : current when laser diode at rated output powe r. * operating voltage v f : voltage of both ends of the laser diode when it at rated outp ut power .
02.04.2012 m anual g081pu series 4 of 10 * slope efficiency e s : characterization of the photo electr on ic conversion efficiency of laser d iode after the lasing begin s; e s = p/ i, where p is the incremen t of output power corresponding to the increment of driving current i. * resistance r d : r d = v/ i, where v is the increment of voltage of laser diode corresponding to the increment of driving curren t i. typical p - i/v - i curve note: the t esting sample is part# g081pu11500m.
02.04.2012 m anual g081pu series 5 of 10 d imension size p1 package dimensions: pd+ pd - ld - ld +
02.04.2012 m anual g081pu series 6 of 10 p2 package dimensions: p3 package dimensions:
02.04.2012 m anual g081pu series 7 of 10 3 laser safety operating instructions laser usage requirements in environment ? a ultra - clean environment should be provided for operating the ld. the operating temperature should be controlled at ? 10 c ? 45 c . ? laser safety warning signs should be posted in the working place. the requirements on the power supply driving the ld ? constant - current should be available for power supply. the power supply should have the ability to avoid current or voltage surge at any condition (during start - up, intermittence or open circuit). the surge would result in instant increase of optical power, which can cause comd (catastrophic optical mirror damage ). ? high power laser d iodes could operate in forward volt age. the reverse current and voltage should not be higher than 25 a and 3 v, respectively. laser operating requirements ? please check the laser safeguard before used the ld. more information about the laser safe is mentioned in ? laser safe ? section of this manual. ? the semiconductor laser d iode is a s ensitive electronic devic e. d o not ship or store near strong electrostatic , electromagnetic , magnetic or radioactive field s. please o bserve precaution for handling electrostatic sensitive devices , such as wearin g anti - static wrist straps, use anti - static packaging material and tools when operation. ? s hut off the power supplier before connecting the ld with the power supplier . t o shut off the ld please decrease the current to zero gradually then shut off the po wer supply.
02.04.2012 m anual g081pu series 8 of 10 ? t he operating current of laser must not be higher than the given rate current. the excessive current would accelerate aging and shorten lifetime, even damage the ld. ? keep the fiber pigtail clean. in non - working environmen t, you must use the protection case to avoid fiber pigtail from being polluted. if you need to clean the fiber pigtail, use ethanol or water - free alcohol cotton balls and wipe fiber pigtail gently . a) b) ? ld must be taken out of the fiber protect ion case before it starts to work. ? please remove the s hort - circuit bridge w hen you want the laser to work . in non - working environment, the short - circuit bridge must be used between electrodes to protect laser. i t is especially important to use the short - circuit bridge wh en you weld the electrodes . a) fiber pigtail f iber pigtail protection case fiber pigtail f iber pigtail protection case s hort - circuit bridge
02.04.2012 m anual g081pu series 9 of 10 b) ? when laser is working, please don ? t point it straight to the fiber as shown below the yellow part , in order to prevent the fiber protection cas e from being damage d by high - power laser generated hea t . ? b en ding diameter of the fiber cannot be allowed to be less than 4cm . when bending the fiber, please make sure the starting point is away larger than 4cm from the fiber root. when moving the l aser , please don`t direct ly use fiber (yellow part ) . not obeying the se rules may cause fracture of the laser fiber from the root . ? make sure that the module and the fiber are in the same plane . s hort - circuit bridge bending diameter d: d4cm f iber root fiber protection case
02.04.2012 m anual g081pu series 10 of 10 c ooling system high - power semiconductor laser diodes are temperature - sensitive devices. h igh temperatur e wi ll affect its perfo rmance. its lifetime may also be shorten ed by working at high temperature. so the generated heat m ust be removed in time when the ld is working. w ater cooling system or tec system is recommended for keep ing the ld working at appropri ate temperature . 4 laser safety instructions high power laser diodes are high energy laser devices. it is harmful to human body and health. any personnel working with or around open lasers must be aware of the following: ? exposure to the laser beam may caus e physical burns and can cause severe eye damage. proper eye protection should be used at all times. all eye protection should be appropriate for the radiation wavelength generated by the laser in use. ? exposure to the laser beam may cause ignition of vola tile or combustible materials. ? never look directly into the laser output port. ? interlock all rooms in which open beams may be present and post appropriate warnings on or near the doors. access to these rooms should be limited to properly trained technicia ns when lasers are in use. ? use appropriate protective coverings over all beam paths whenever possible. ? lasers and optical elements should be positioned to keep the beam and reflections below eye level.
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