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 3 3 1 1 - - t t e e c c - - p p r r 3 3 . . 1 1 m m m m m m 1 1 4 4 m m m m w w ?light emitting diodes led31 - tec - pr are designed for emitting at a spectral range around 31 00 nm. thermocooler and thermoresistor are mounted inside 9 mm package to - 5. hete rostructures (hs) are grown on inas substrates ?light emitting diodes led31 - 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: led31 can be used in optical pair with our photodiodes pd36 . our standard led driver provides power supply of led31 - tec - pr in two recommended here regimes (quasi - cw and pulsed). parameters min typ max waveleng th, m m 3.0 0 3 . 10 3 . 20 fwhm, m m 0. 6 0 0.70 0.80 optical power, m w q uasi - cw @ 200 ma pulsed@2a 12 180 14 200 16 220 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 t hermocooler , 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 led31 typical spectra at different temperatures 0 3 6 9 12 15 2000 2400 2800 3200 3600 4000 4400 4800 wavelength, nm intensity, a.u. t=51c t=6c t=20c led31 - typical power vs. current characteristic at different temperatures 0 4 8 12 16 20 24 0 50 100 150 200 current, ma power, m w t=51c t=6c t=20c led31 - typical current - voltage characteristic -40 -30 -20 -10 0 10 20 30 40 -4 -2 0 2 voltage,v current,ma far field pattern with and without reflector led31 (without reflector) led31-pr (with reflector) recommended regimes of led operation quasi - cw 200 ma 250 m s 1 m s 2 a 500 m s f=2 khz f=2 khz pulsed 250 m s package to - 5 wit h parabolic reflector
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