?1 SLD343YT e00198-ps 4w high power laser diode description the SLD343YT has a compatible package, and allows independent thermal and electric design. it is a high power laser diode that affords easy optical design. features high-optical power output recommended optical power output: p o = 4.0w high-optical power density: 4w/200 m (emitting line width) applications solid state laser excitation medical use material processing measurement structure algaas quantum well structure laser diode operating lifetime mttf 10,000h (effective value) at po = 4.0w, tth = 25? absolute maximum ratings (tth = 25?) optical power output p o 4.4 w reverse voltage v r ld 2 v pd 15 v operating temperature (tth) topr ?0 to +30 ? storage temperature tstg ?0 to +85 ? equivalent circuit sony reserves the right to change products and specifications without prior notice. this information does not convey any licens e by any implication or otherwise under any patents or other right. application circuits shown, if any, are typical examples illustr ating the operation of the devices. sony cannot assume responsibility for any problems arising out of the use of these circuits. m-288 te cooler case ld pd th 1345678910 warranty this warranty period shall be 90 days after receipt of the product or 1,000 hours operation time whichever is shorter. sony quality assurance department shall analyze any product that fails during said warranty period, and if the analysis results show that the product failed due to material or manufacturing defects on the part of sony, the product shall be replaced free of charge. laser diodes naturally have differing lifetimes which follow a weibull distribution. special warranties are also available. no. function 1 2 3 4 5 6 7 8 9 10 te cooler (negative) case laser diode (anode) thermistor thermistor laser diode (cathode) photo diode (anode) photo diode (cathode) te cooler (positive) pin configuration (top view)
2 SLD343YT electrical and optical characteristics (tth = thermistor temperature, tth = 25 c) handling precautions eye protection against laser beams the optical output of laser diodes ranges from several mw to 10w. however the optical power density of the laser beam at the diode chip reaches 1.5mw/cm 2 . unlike gas lasers, since laser diode beams are divergent, uncollimated laser diode beams are fairly safe at a laser diode. for observing laser beams, always use safety goggles that block infrared rays. usage of ir scopes, ir cameras and fluorescent plates is also recommended for monitoring laser beams safely. item symbol conditions min. typ. max. unit ith iop vop p ? // ? x, ? y ?? ? // d imon rth threshold current operating current operating voltage wavelength ? radiation angle positional accuracy differential efficiency monitor current thermistor resistance p o = 4.0w p o = 4.0w p o = 4.0w p o = 4.0w p o = 4.0w p o = 4.0w p o = 4.0w v r = 10v tth = 25 c 790 10 5 0.5 0.2 1.0 4.6 2.0 23 10 1.1 1.0 10 2.0 6.5 3.0 840 35 15 100 3 4 1.5 4.0 a a v nm degree degree m degree degree w/a ma k ? perpendicular parallel position angle ? wavelength selection classification type SLD343YT-1 SLD343YT-2 SLD343YT-3 wavelength (nm) 795 5 810 10 830 10 type SLD343YT-21 SLD343YT-24 SLD343YT-25 wavelength (nm) 798 3 807 3 810 3 safety goggles for protection from laser beam ir fluorescent plate optical material lens laser diode optical board optical power output control device temperature control device
3 SLD343YT example of representative characteristics optical power output vs. forward current characteristics tth = 25 c i f forward current [a] 0 1.5 3 4.5 6 7.5 5 4 3 2 1 p o optical power output [w] far field pattern angle [degree] 40 20 0 20 40 1.0 0.8 0.6 0.4 0.2 relative radiant intensity tth = 25 c p o = 4.0w ? // oscillation wavelength wavelength [nm] 780 790 800 810 820 1.0 0.8 0.6 0.4 0.2 relative radiant intensity tth = 25 c p o = 4.0w thermistor characteristics tth thermistor temperature [ c] 10 0 10 40 60 50 10 5 0 rth thermistor resistance [k ? ] 20 30 50 70 te cooler characteristics 40 q absorbed heat [w] 30 20 10 0 ? t temperature difference [ c] 020406080 20 15 10 5 0 v t pin voltage [v] tc = 25 c 3a 2a 1a 1a 2a 3a ? tvsv t = 4a ? tvsq t = 4a te cooler characteristics 40 q absorbed heat [w] 30 20 10 0 ? t temperature difference [ c] 020406080 20 15 10 5 0 v t pin voltage [v] tc = 33 c 3a 2a 1a 1a 2a 3a ? tvsv t = 4a ? tvsq t = 4a ? t tth tc : tc tth : thermistor temperature : case temperature ? t tth tc : tc tth : thermistor temperature : case temperature
4 SLD343YT package outline unit: mm package mass sony code eiaj code jedec code m-288 150g 4 4.04 0.03 + 0.08 19.05 0.15 4 r1.0 4 r1.0 5.0 window glass 38.60 0.15 31.75 0.50 12.8 9 1.0 2.54 44.45 0.50 ld chip 31.75 0.50 0.9 max 17.0 reference plane 19.30 0.15 3.0 14.9 0.3 17.8 0.3 1.0 26.4 3.6 m-288 sony corporation
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