70 GH0781RA2C laser diodes notice in the absence of confirmation by device specification sheets, sharp takes no responsibility for any defects that may occur in equ ipment using any sharp devices shown in catalogs, data books, etc. contact sharp in order to obtain the latest device specification sheets before usi ng any sharp device. internet internet address for electronic components group http://sharp-world.com/ecg/ GH0781RA2C features (1) maximum optical power output : 120mw (cw) (2) high power (pulse max. 225mw), max. ? 48 speed writing (3) high coupling efficiency. the ellipticity ( ? / //) is close to 1. (4) wavelength : typ. 784nm (5) 5.6mm package applications (1) cd-r drives (2) cd-rw drives outline dimensions high power laser diode for max. ? 48 speed cd-r drive(784nm-pulse 225mw) (unit : mm) reference plane laser chip emission point cap glass x ?.0 y z 0.4 0.1 1.0 0.15 0.25 0.03 0.4 0.1 3-?.45 0.1 ?.2 max. 0.5 min. 2 3 1 ?.55 0.1 ?.6 + 0 0.025 ?.4max. ?.0 min. 0.5 max. burr0.1 max. 2.3 0.5 1.2 0.1 1.27 0.08 6.5 1.0 tolerance 0.2mm ? 2 ? 2 ? 2 ? 1 2 3 1 90 2 absolute maximum ratings (t c =25?c ? 1 ) terminal connection enlarged view of emission point non connection q w e laser diode center of virtual circle that runs 3 points on the stem periphery emission point 0 0.08 0 0.08 x y parameter symbol rating unit reverse voltage v rl 2v ? 1 operating temperature ? 3 cw t opc(c) -10 to +65 ?c ? 2 pulse -10 to +75 storage temperature t stg -40 to +85 ?c ? 4 soldering temperature t sld 300 ?c ? 1 case temperature ? 2 pulse width : 0.1?, duty : 50% ? 3 cw (continuous wave) drive ? 4 at the position of 1.6mm or more from the lead base (within 3s) ? 3 optical power output p o 120 mw ? 2 optical power output (pulse) p p 225 laser t opp(c) ?c mw ? 1 : dimension measured at lead base ? 2 : within 0.6mm from reference plane
notice in the absence of confirmation by device specification sheets, sharp takes no responsibility for any defects that may occur in equ ipment using any sharp devices shown in catalogs, data books, etc. contact sharp in order to obtain the latest device specification sheets before usi ng any sharp device. internet internet address for electronic components group http://sharp-world.com/ecg/ 71 GH0781RA2C laser diodes electro-optical characteristics ? 1 (t c =25?c) parameter symbol max. unit threshold current i th 40 ma half intensity angle ? 2 ? 3 parallel // 9.8 ? 17.5 ? 4 ripple r l + 20 % misalignment angle ?? + 2.5 ? 1 initial value, cw (continuous wave) drive ? 2 angle at 50% peak intensity (full-width at half-maximum) ? 3 parallel to the junction plane (x-z plane) perpendicular to the junction plane (y-z plane) ? 4 r l = ? p/p ? p : the maximum deviation of the far field pattern from its approximate curve p : the peak of the approximate curve ? 5 pulse drive (pulse width : 0.1?, duty : 50%) conditions min. typ. ? -30 7.8 8.7 ? 2 ? 3 perpendicular 14.5 16 -20 - -2.5 - operating current i op po=100mw - 141 167 ma operating voltage v op - 2.1 2.5 v wavelength p 780 784 787 nm ? ? 3 parallel ?// -1.5 - + 1.5 ? ? 3 perpendicular interference pattern intensity po=100mw - - 1 - polarization ratio p l po=3mw, na=0.13 20 - - - differential efficiency d 70mw i(100mw)-i(30mw) 0.8 1.0 1.3 mw/ma ? ? ? 5 kink k-li p1=45mw, p2=135mw, p3=225mw - - 10 % ?please refer to the chapter "handling precautions"
72 laser diodes notice in the absence of confirmation by device specification sheets, sharp takes no responsibility for any defects that may occur in equ ipment using any sharp devices shown in catalogs, data books, etc. contact sharp in order to obtain the latest device specification sheets before usi ng any sharp device. internet internet address for electronic components group http://sharp-world.com/ecg/ GH0781RA2C tc=25?c tc=50?c tc=75?c forward current i f (ma) optical power output po(mw) 0 0 20 40 60 80 100 120 0 50 100 150 200 250 300 tc=25 ? c tc=50 ? c tc=75 ? c forward current i f (ma) optical power output pp(mw) 0 0 50 100 150 200 0 100 200 300 400 (pulse width : 0.5 s, duty : 50%) optical power output - forward current [cw] optical power output - forward current [pulse] case temperature tc( ? c) relative threshold current 0.1 1 10 020 10 40 60 30 50 70 80 angle ( ? ) relative optical power output 0 0.2 0.4 0.6 0.8 1.0 1.2 -40.0 -20.0 0.0 20.0 40.0 // (tc=25 ? c, po=100mw) case temperature dependence of threshold current [cw] far field pattern fead back(%) rin(db/hz) -160 -150 -140 -130 -120 -110 -100 -90 0.001 0.01 0.1 1 10 max. (db/hz) min. (db/hz) measurement frequency : band width : 720khz 10khz tc = po = 25 ? c 3mw measurement frequency : band width : 720khz 10khz tc = po = 25 ? c 3mw high frequency modulation : tdk hfm-098 (5v, 350mhz) fead back(%) rin(db/hz) -160 -150 -140 -130 -120 -110 -100 -90 0.001 0.01 0.1 1 10 max. (db/hz) min. (db/hz) relative intensity noise (rin) [without high frequency modulation] relative intensity noise (rin) [with high frequency modulation] note) characteristics shown in diagrams are typical values. (not assurance value)
73 GH0781RA2C laser diodes notice in the absence of confirmation by device specification sheets, sharp takes no responsibility for any defects that may occur in equ ipment using any sharp devices shown in catalogs, data books, etc. contact sharp in order to obtain the latest device specification sheets before usi ng any sharp device. internet internet address for electronic components group http://sharp-world.com/ecg/ wavelength (nm) 770 780 790 relative optical power output (tc=25 ? c, po=3mw) 769 779 789 relative optical power output wavelength (nm) (tc=25 ? c, po=3mw) lasing spectrum [without high frequency modulation] lasing spectrum [with high frequency modulation] light path length (mm) 0 50 100 -10.37 0 10.37 visibility (%) (tc=25 ? c, po=3mw) light path length (mm) 0 50 100 -10.37 0 10.37 visibility (%) (tc=25 ? c, po=3mw) visibility [without high frequency modulation] visibility [with high frequency modulation] note) characteristics shown in diagrams are typical values. (not assurance value)
150 application circuits notice the circuit application examples in this publication are provided to explain representative applications of sharp devices and are not intended to guarantee any circuit design or license any intellectual property rights. sharp takes no responsibility for any problems related to any intellectual property right of a third party resulting from the use of sharp's devices. contact sharp in order to obtain the latest device specification sheets before using any sharp device. sharp reserves the right to make changes in the specifications, characteristics, data, materials, structure, and other contents described herein at any time without notice in order to improve design or reliability. manufacturing locations are also subject to change without notice. observe the following points when using any devices in this publication. sharp takes no responsibility for damage caused by improper use of the devices which does not meet the conditions and absolute maximum ratings to be used specified in the relevant specification sheet nor meet the following conditions: (i) the devices in this publication are designed for use in general electronic equipment designs such as: --- personal computers --- office automation equipment --- telecommunication equipment [terminal] --- test and measurement equipment --- industrial control --- audio visual equipment --- consumer electronics (ii)measures such as fail-safe function and redundant design should be taken to ensure reliability and safety when sharp devices are used for or in connection with equipment that requires higher reliability such as: --- transportation control and safety equipment (i.e., aircraft, trains, automobiles, etc.) --- traffic signals --- gas leakage sensor breakers --- alarm equipment --- various safety devices, etc. (iii)sharp devices shall not be used for or in connection with equipment that requires an extremely high level of reliability and safety such as: --- space applications --- telecommunication equipment [trunk lines] --- nuclear power control equipment --- medical and other life support equipment (e.g., scuba). contact a sharp representative in advance when intending to use sharp devices for any "specific" applications other than those recommended by sharp or when it is unclear which category mentioned above controls the intended use. if the sharp devices listed in this publication fall within the scope of strategic products described in the foreign exchange and foreign trade law of japan, it is necessary to obtain approval to export such sharp devices. this publication is the proprietary product of sharp and is copyrighted, with all rights reserved. under the copyright laws, no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, for any purpose, in whole or in part, without the express written permission of sharp. express written permission is also required before any use of this publication may be made by a third party. contact and consult with a sharp representative if there are any questions about the contents of this publication.
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