RLD78PZW2 laser diodes 1/2 algaas laser diode RLD78PZW2 the RLD78PZW2 is infrared laser diode high power output type (pulse 180mw). this is the best for optical disk drive use, such as cd-r/rw. ! ! ! ! applications max. x32 speed cd-r/rw drives. ! ! ! ! features 1) absolute maximum optical power output : pulse 180mw 2) wave length : typ. 784nm 3) 5.6mm small packages ! ! ! ! external dimensions (units : mm) 2.3 + 0 1.0min. 3.6 4.4 + 0 1.0 0.1 0.4 0.1 (1.27) 1.2 0.1 6.5 0.5 3 ? 0.45 (2) (1) (3) (3) (1) l.d. (2) ? 0.025 5.6 glass window chip 90 2 p t y p e equivalent circuit diagram ! ! ! ! absolute maximum ratings (tc=25 c) parameter output raser operating temperature storage temperature p o v r v r(pin) tstg topr pulsed 180 2 pin photodiode ? ? 10 to + 70 ? 40 to + 85 mw v ? symbol limits unit c c reverse voltage
RLD78PZW2 laser diodes 2/2 ! ! ! ! electrical and optical characteristics (tc=25 c, cw) ? // and are defined as the angle within which the intensity is 50% of the peak value. threshold current operating current parallel divergence angle perpendicular divergence angle parallel deviation angle peak emission wavelength perpendicular deviation angle emission point accuracy operating voltage differential efficiency parameter symbol min. typ. max. unit conditions i th ma ? 30 50 ? i op ma ? 120 150 p o = 80mw // ? deg 8910 ? deg 15 17 19 ? // deg ? 20 + 2 nm 779 784 789 p o = 80mw astigmatism ? m ?? 6 na = 0.15, p o = 80mw ? deg ? 30 + 3 ? y ? z ? x m ? 80 0 + 80 ? v op v ? 2.0 2.5 mw/ma 0.7 0.9 1.4 ! ! ! ! electrical and optical characteristics curves optical power : p o (mw) operating current : i f (ma) fig.1 optical output vs. operating current 180 150 100 50 0 0 50 100 150 200 250 tc = 10 c 30 c 50 c 70 c relative optical intensity angle ( deg) fig.2 far field pattern 1.0 0.6 0.8 0.2 0.4 0 ? 60 ? 40 ? 20 0 60 40 20 wavelength : (nm) package temperature : t c ( c) fig.3 dependence of wavelength on temperature 800 790 780 5 15253545556575
|
