preliminary data cw laser diodes L7910 features radiant flux (cw) : 4 mw peak emission wavelength : 755 nm 5 nm emitting area size : 5 m x 1 m high stability long life compact applications printing measuring instrument medical instrument p eak emission wavelength 755 nm, radiant flux 4 mw (cw) information furnished by hamamatsu is believed to be reliable. however, no responsibility is assumed for possible inaccuracies or omissions. specifications are subject to change without notice. no patent rights are granted to any of the circuits described herein. ?00 7 hamamatsu photonics k.k. absolute maximum ratings (top(c) = 38 c) pa ra meter symbol radiant flux reverse voltage (ld) reverse voltage (pd) operating temperature storage temperature v alue unit characteristics (top(c) = 38 c) e v rl v rd t op(c) t stg 6 2 20 ? 10 to +70 ? 20 to +80 mw v v c c e = 4 mw ? e = 4 mw pa ra meter operating current p eak emission wavelength f orward voltage lasing threshold current monitor pd current pd cutoff frequency beam spread angle symbol conditions unit v alue fwhm ma nm v degree degree ma ma mhz min. 30 750 1.6 5 31 15 0.5 30 i op p v f // i th i m f c horizontal ve r tical ty p. 57 755 1.9 7 36 35 1.5 50 max. 76 760 2.2 10 41 50 3.5 - e = 4 mw , v rd = 15 v v rd = 15 v (-3db)
cw laser diodes L7910 figure 1: radiant flux vs. operating current (typ.) figure 2: radiant flux vs. monitor current (typ.) figure 3-1: directivity cat. no. lld1033e02 dec. 2007 http://jp.hamamatsu.com hamamatsu photonics k.k., laser group, sales dept. 1-8-3, shinmiyakoda, kita-ku, hamamatsu city, shizuoka, 431-2103, japan, telephone: (81)53-484-1301, fax: (81)53-484-1302, e-m ail: laser-g@lsr.hpk.co.jp u. s. a.: hamamatsu corporation:360 foothill road, p.o. box 6910, bridgewater, n.j. 08807-0910, u.s.a.telephone: (1)908-231-0960, fax: (1)908-231-1218 e-mail: usa@hamamatsu.com germany: hamamatsu photonics deutschland gmbh: arzbergerstr. 10, d-82211 herrsching am ammersee, germany, telephone: (49)8152-3 75-0, fax: (49)8152-2658, e-mail: info@hamamatsu.de fr ance: hamamatsu photonics france s.a.r.l.: 8, rue du saule trapu, parc du moulin de massy, 91882 massy cedex, france, telepho ne: 33(1) 69 53 71 00, fax: 33(1) 69 53 71 10, e-mail: infos@hamamatsu.fr united kingdom: hamamatsu photonics uk limited: 2 howard court, 10 tewin road, welwyn garden city, hertfordshire al7 1bw, unite d kingdom, telephone: (44)1707-294888, fax: (44)1707-325777, e-mail: info@hamamatsu.co.uk north europe: hamamatsu photonics norden ab: smidesv?gen 12, se-171-41 solna, sweden, telephone: (46)8-509-031-00, fax: (46)8-5 09-031-01, e-mail: info@hamamatsu.se italy: hamamatsu photonics italia s.r.l.: strada della moia, 1/e, 20020 arese, (milano), italy, telephone: (39)02-935 81 733, f ax: (39)02-935 81 741, e-mail: info@hamamatsu.it 8 5 2 0 0 operating current i op (ma) radiant flux e (w) ( top(c) = 38 c ) 1 3 4 6 7 10 20 40 30 50 60 70 80 3.0 0.0 0 radiant flux e (mw) monitor current i m (ma) ( top(c) = 38 c ) 0.5 1.0 1.5 2.0 2.5 1 24 3 5 6 7 (parallel direction) 80 60 100 40 20 0 -30 -40 -20 -10 0 10 20 30 40 relative radiant flux (%) angle (degree) top view ( e =4 mw, t op(c) = 38 c ) parallel direction 80 60 100 40 20 0 -30 -40 -20 -10 0 10 20 30 40 relative radiant flux (%) angle (degree) top view ( e =4 mw, t op(c) = 38 c ) vertical direction (*example from measurement) figure 3-2: directivity (vertical direction) (*example from measurement) figure 4: dimensional outline (unit: mm) 9.0 side view bottom view 5.7 0.2 2.54 1.0 pd ld 0.45 2.8 0.3 7.0 0.5 5.1 0.5 2.4 1.5 0.4 glass window ld chip common to case (pin connection) ld cathode pd anode pd anode ld cathode common to case +0 -0.1
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