light emitting diodes 1.6 ? ? 4.6 m m m m m o o d d e e l l l l e e d d 1 1 9 9 - - t t e e c c - - p p r r 1 1 . . 9 9 5 5 m m m m m m 1 1 . . 0 0 m m w w ?light emitting diodes led19 - tec - pr are designed for emitting at a spectral range around 19 50 nm. thermocooler and thermoresistor are mounted inside 9 mm package to - 5. hete rostructures (hs) are grown on gasb substrates ?light emitting diodes led19 - tec - pr are developed for using in optical gas sensors and medical diagnostics. such construction gives possibility for temperature stabilization of led parameters. lifetime is mor e then 10000 hours. ? related products: led19 can be used in optical pair with our photodiodes pd24 . our standard led driver provides power supply of led19 - tec - pr in two recommended here regimes (quasi - cw and pulsed). parameters min typ max waveleng th, m m 1 . 90 1.95 1.99 fwhm, m m 0.15 0.20 0.25 optical power, m w q uasi - cw @ 200 ma pulsed@2a 0.8 20 1 . 0 25 1 . 2 30 switching time, ns 10 30 50 range of t emperature control o c - 10 ? +60 emitting area, m m 300x300 soldering temperature 95 o c pa ckage to - 5 with thermocooler , t hermistor and parabolic reflector main thermocooler parameters (without load) 0 10 20 30 40 50 -20 0 20 40 60 temperature, c thermoresistance, kohm i max q max u max d t max (amps) (watts) (volts) c 0.7 0.4 1.0 67 led chip tec lead thermoresistor top side view thermoresistor thermoresistor led19 typical spectra at different temperatures 0 20 40 60 80 100 120 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500 wavelength, nm intensity, a.u. t=20c t=48c t=6c led19 - typical power vs. current characteristic at different temperatures 0,0 0,2 0,4 0,6 0,8 1,0 1,2 1,4 0 50 100 150 200 current, ma power, mw t=20c t=48c t=6c led19 - typical current-voltage characteristic -30 -20 -10 0 10 20 30 40 -5 -4 -3 -2 -1 0 1 2 voltage,v current, ma far field pattern with and without reflector led19 (without reflector) led19-pr (with reflector) recommended regimes of led operation quasi - cw 200 ma 250 m s 250 m s 1 m s 2 a 500 m s f=2 khz f=2 k hz pulsed package to - 5 wit h parabolic reflector
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