hl6315/16g algainp laser diodes description the hl6315/16g are 0.63 m band algalnp laser diodes with a multi-quantum well (mqw) structure. they are suitable as light sources for laser pointers and optical equipment. application laser pointer features visible light output: 635 nm typ. (nearly equal to he-ne gas laser) optical output power: 3 mw cw low operating current: 30ma typ. low operating voltage: 2.7 v max.
hl6315/16g 2 package type ? hl6315/16g: g2 internal circuit ? HL6315G ld pd 1 2 3 internalcircuit ? hl6316g ld pd 1 2 3
hl6315/16g 3 absolute maximum ratings (t c = 25c) item symbol rated value unit optical output power p o 3mw pulse optical output power p o (pulse) 5 *1 mw ld reverse voltage v r (ld) 2v pd reverse voltage v r (pd) 30 v operating temperature t opr C10 to +50 c storage temperature t stg C40 to +85 c note: 1. pulse condition: pulse width 1s, duty 50% optical and electrical characteristics (t c = 25c) item symbol min typ max unit test conditions optical output power p o 3 mw kink free threshold current i th 25 ma operating current i op 30 ma p o = 3 mw operating voltage v op 2.7 v p o = 3 mw lasing wavelength l p 630 635 640 nm p o = 3 mw beam divergence (parallel) q // 6 8 10 deg. p o = 3 mw beam divergence (perpendicular) q ^ 23 30 39 deg. p o = 3 mw monitor current i s 0.3 ma p o = 3 mw, v r = 5 v
hl6315/16g 4 typical characteristic curves 3 2 1 0 0 20 40 60 80 100 forward current, i f (ma) optical output power, p o (mw) optical output power vs. forward current ?c t c t c = -10 ? c t c = 25 = 50 ?c 0.4 0.3 0.2 0.1 0 01 3 2 optical output power, p o (mw) optical output power vs. monitor current monitor current, i s (ma) t c = 25 ?c v r (pd) = 5 v
hl6315/16g 5 typical characteristic curves (cont) ?40 ?20 0 20 40 angle (deg) relative intensity parallel perpendicular p o = 3 mw far field pattern 0 0.2 0.4 0.6 0.8 1 t c = 25 ?c p o = 3 mw 625 650 630 645 640 wavelength, l p (nm) p o = 2 mw p o = 1 mw lasing spectrum relative intensity t c = 25 635 ?c typical characteristic curves (cont)
hl6315/16g 6 100 -10 0 102030 40 case temperature, t c (
c) threshold current, i th (ma) threshold current vs. case temperature 10 50 1.0 0.8 0.6 0.4 0.2 -10 0 10 20 30 40 case temperature, t slope efficiency vs. case temperature ?c c () 50 slope efficiency, h s (mw/ma) 0
hl6315/16g 7 typical characteristic curves (cont) -10 40 50 030 20 10 0.4 0.3 0.2 0.1 0 monitor current vs. case temprature case temperature, t c (
c) monitor current, i s (ma) p o = 3 mw v r(pd) = 5 v 636 634 632 630 628 -10 50 040 30 20 10 case temperature, t c (
c) lasing wavelength vs. case temperature lasing wavelength, l p (nm) 638 640 642 644 p = 3 mw o
hl6315/16g 8 typical characteristic curves (cont) 20 15 10 5 0 01 3 2 optical output power, p o (mw) astigmatism vs. optical output power t c = 25 ?c na= 0.55 astigmatism , as (
m) 500 400 300 200 100 0 01 3 2 optical output power, p o (mw) polarization ratio vs. optical output power polarization ratio t c = 25 ?c na= 0.4 na= 0.25
hl6315/16g 9 polarization direction the polarization of 0.63 m lds is different from that of 0.83/0.78/0.67 m lds. the polarization direction of 0.63 m m lds is illustrated in the figure below. te mode
(electric field) tm mode
(magnetic field) ld top view
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