-1- [ ytb-sc0017-02 ] 2012/10/16 violet laser diode for external cavity NDVA316T test sample features ? for external cavity laser with low reflection coa ting on front facet ? optical output power: 45mw ? can type: 5.6 mm floating mounted with photo diode and zener diode absolute maximum ratings item symbol absolute maximum ratings unit optical output power po 65 mw ld forward current if 120 ma allowable reverse current ir (ld) 85 ma pd reverse voltage vr (pd) 20 v storage temperature tstg -25 ~ 75 c operating case temperature tc 10 ~ 55 c initial electrical/optical characteristics (ta=23 c *1) item condition symbol min typ. max unit optical output power cw po - - 45 mw peak wavelength po=45mw p 414 - 420 nm threshold current cw ith - 45 - ma operating current po=45mw iop - 70 - ma slope efficiency cw - 1.9 - w/a operating voltage po=45mw vop - 4.6 - v // 7 - 12 deg. beam divergence*2 po=45mw ? 15 - 28 deg. ? // -2.0 - 2.0 deg. emission point accuracy angle po=45mw ?? -2.5 - 2.5 deg. monitor current*3 po=20mw im - - 1 ma *1 there is some range in ambient temperature. *2 full angle at 50% from peak intensity *3 monitor current is short time power reference pu rpose only. not guaranteed for accuracy. this value must be affected intensely by feedback from composing optics. all figures in this specification are measured by n ichia's method and may contain measurement deviatio ns. diffractive feedback efficiency to the laser diode must be limited less than 30 % under the external c avity configuration. this model is test sample for evaluation or design purpose only. life time is not guaranteed. the above specifications are for reference purpose only and subjected to change without prior notice. safety of laser light laser light can damege the human eyes and skin. do not expose the eye or skin to any laser light directly and/or through optical lens. w hen handling the lds, wear appropriate safety glasses to prevent laser light, even any ref lections from entering to the eye. focused laser beam through optical instruments will increas e the chance of eye hazard. these lds are classified in class 4 of iec60825-1 and 21 cfr part 1040.10 safet y standards . it is absolutely necessary to take overall safety measures against user's modules, equipment and systems into which nichia ld s are incorporated and/or integrated. nichia corporation http://www.nichia.co.jp headquarters 491 oka, kaminaka-cho, anan-shi, tokushima 774-8601 , japan phone: +81-884-22-2311 fax: +81-884-21-0148 contact tokyo sales office 13f tamachi center building 34-7, shiba 5-chome, mi nato-ku, tokyo 108-0014, japan phone: +81-3-3456-3108 fax: +81-3-5440-7330 outline dimension unit (mm) ( ) are reference figures pin connection this model has a zener diode built in as protection circuit against static electricity.
-2- [ ytb-sc0017-02 ] 2012/10/16 typical initial electrical/optical characteristics optical output power vs. forward current 0 10 20 30 40 50 20 40 60 80 current[ma] optical output power po [mw] 0 1 2 3 4 5 slope efficiency se [-] po se ta=23deg.c forward voltage vs. forward current 0 1 2 3 4 5 0 20 40 60 80 forward current if [ma] forward voltage vf [v] ta=23deg.c spectrum 410 412 414 416 418 420 wavelength [nm] optical intensity [5db/div] . ta=23deg.c po=45mw far field pattern 0 0.5 1 -40 -30 -20 -10 0 10 20 30 40 angle [] optical intensity [-] . ta=23deg.c po=45mw
-3- [ ytb-sc0017-02 ] 2012/10/16 cautions (1) operating method the ld shall change its forward voltage requirement and optical output power according to temperature change. also, the ld will require more operation current to maint ain same output power as it degrades. the use of heat sink is strongly recommended to red uce increases in temperature. confirm that electrical spike current generated by switching on and off does not exceed the maximum op erating current level specified herein above as absolute max rating . also, employ appropriate countermeasures to redu ce chattering and/or overshooting in the circuit. (2) static electricity static electricity or electrical surges will reduce and degrade the reliability of the lds. it is reco mmended to use a wrist strap or anti-electrostatic glove when handling the product. (3) absolute maximum rating active layer of lds shall have high current density and generate high electric field during its operat ion. in order to prevent excessive damage, the ld must be operated s trictly below absolute max rating. (4) others nichia lds described in this brochure are intended to be used for ordinary electronic equipment (such as office equipment, communications equipment, measurement in struments and household appliances). consult nichia ?s sales staff in advance for information on the application s in which exceptional quality and reliability are required, particularly when the failure or malfunction of the lds may directly jeopardize life or health (such a s for airplanes, aerospace, submersible repeaters, nuclear reactor c ontrol systems, automobiles, traffic control equipm ent, life support systems and safety devices). the purchaser must acknowledge that any ld can be f ailed statically and must design its equipments fai l safe design. prior to use of the ld, please confirm that the ld, as described in nichia?s specifications, meets the life expectancy needs of, and provides the features required by the circuit and any related modules, equipment and/or systems. nichia prohibit purchaser from reverse engineering, disassembling, or taking any other steps to derive the structure or design of the ld. the appearance and specifications of the product ma y be modified for improvement without notice. the f ormal specifications must be exchanged and signed by both parties before large volume purchase begins. no unauthorized transmission or reproduction of thi s document, either in whole or in part, is permitte d.
|
