08.02.2012 ld1490 - c010 1 of 3 ld1490 - c010 technical data infrared distributed feedback laser diode features ? lasing mode : single longitudina l mode ? peak wavelength : typ. 1490 nm ? optical ouput power: 10 mw, cw ? package: 5.6 mm, flat window absolute maximum ratings (t c =15c) item symbol value un it cw output power p o 20 mw ld reverse voltage v r 2 v ld forward current i op 200 ma pd reverse voltage v rpd 20 v pd forward current i pd 10 ma operating case temperature t c 0 ?70 c storage temperature t stg - 40 ?85 c specifications (t c = 2 5c) it em conditions symbol min. typ. max. unit optical specifications cw output power 0 ?70 c p o - 10 - mw center wavelength 25c, p o =3mw c 1487 1490 1493 nm 0..70c, p o =5mw 1482 - 1498 spectral width 25c, p o =5mw ? - 0.11 0.2 nm wavelength temp. coefficient 0..70c, p o =5mw ? / t - 0.11 - nm/k fwhm beam divergence 25c, p o =3mw U - 26 - deg. - 45 - deg. modulation bandwidth 25c, i op = i th +16ma f - 3db 6 - - ghz 60c, i op = i th +16ma 4 - - resonance frequency 25c, i op = i th +16ma f r - 5 - ghz 60c, i op = i th +16ma - 4 - electrical specifications threshold current 25 c i th - 18 30 ma 70 c - 35 operating current 25c, p o =5mw i op - 38 50 ma 70c, p o =5mw - 65 slope efficiency 25c, p o =5mw 0.17 0.26 - w/a 70c, p o =5m w 0.16 - operating voltage 25c, p o =5mw v op - 1.2 1.6 v serial resistance 25c, p o =5mw r s - 6 - monitor current 25c, p o =5mw i m 40 100 700 a monitor dark current 25c, v rpd =5v i d - 0.1 1.0 a monitor capacitance f=1mhz, v rpd =5v c m - 5 10 pf the above specifications are for reference purpose only and subjected to change without prior notice. distributed
08.02.2012 ld1490 - c010 2 of 3 package dimensons 5.6 mm package ( unit:mm ) bottom view pin funciton 1 case, ld anode 2 pd anode 3 pd cathode 4 ld cathode
08.02.2012 ld1490 - c010 3 of 3 sa fety of laser light ? laser light can damage the human eyes and skin. do not expose the eye or skin directly to any laser light and/or through optical lens. when handling the lds, wear appropriate safety glasses to prevent laser light, even any reflections f rom entering to the eye. focused laser beam through optical instruments will increase the chance of eye hazard. ? the ld emitts invisible light cautions 1. operating methode ? this ld shall change its forward voltage requirement and optical ouput power according to temperature change. also, the ld will require more operation current to maintain same ouput power as it degrades. in order to maintain output power, use of apc (automatic power control) is recommende d. which use monitor feedback to adjust the operation current. ? confirm that electrical spike current generated by switching on and off does not exceed the maximum operating current level specified herein above as absolute maximum rating. also, employ appro priat countermeasures to reduce 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 recommended to use a wrist trap or anti - electrostatic glove when handeling the product. 3. absolute maximum rating ? active layer of lds shall have high current density and generate high electric field during its operation. in order to prevent excessive damage, the ld must be operated striclty below absolute maximum rating.
|
