commercial lasers key features ? 9763 nm wavelength ? full fiber laser feedback protection ? 10 w output power ? high reliability ? 105 m aperture ? 0.22 or 0.15 na ? isolated electrical contacts the jdsu l4 ti series expands the l4 and l4 i platforms by offering a tighter wavelength range specification at 976 nm combined with a fiber laser feedback protection. by controlling accurately the wavelength of the epitaxial structure during the growth, the l4 ti is specified at 3 nm around 976 nm for pumping fiber lasers in this narrow pump absorption bandwidth. a specific design without changing the l4 t footprint, the l4 ti offers a high degree of feedback protection from any fiber laser wavelength. this feature allows end users to operate the fiber laser in a feedback riskfree environment for the diode laser, and at a less costly solution than a traditional isolation system. the 6398-l4 ti series diode lasers offer 10w of power from a 105 m fiber. in addition, l4 ti multimode pump modules take advantage of the existing global jdsu manufacturing infrastructure to offer both high brightness and small footprint with consistent high reliability in a cost-effective solution. application ? fiber laser pumping high-power 10 w 9xx nm fiber-coupled diode laser 6398-l4 ti series north america : 800 498-jdsu (5378) website : www.jdsu.com worldwide : +800 5378-jdsu
dimensions diagram 2 6398-l4 ti series 31 10 ( 3.9 ) 17 13 2x 1 7.5 2x 4.3 2x 2.5 11.8 b a 7.7 3.9 2.54 1.5 8.5 metal case strain relief boot pinout pin description a laser cathode (-) b laser anode (+) (specifications in mm unless otherwise noted.) standard tolerances mm: x.x = 0.5 x.xx = 0.25
3 6398-l4 ti series specifications for 0.22na 1 parameter symbol minimum typical maximum laser characteristics cw output power p o - - 10 w mean wavelength 2 p 976 nm 973 nm 976 nm 979 nm spectral width (90% of maximum) ? - 3 nm 6 nm slope efficiency d 976 nm - 0.90 w/a - conversion efficiency - 48% - threshold current i th - 600 ma 850 ma operating current (bol) i op 976 nm - 11.8 a 13.0 a forward voltage v f - 1.81 v 2.0 v series resistance r s - 0.04 - recommended case temperature t c 20c 25c 40c wavelength tuning vs. temperature 3 ? / t - 0.35 nm/c - wavelength tuning vs. output power ? / p - 1.0 nm/w - fiber characteristics fiber core diameter d c - 105 m - fiber numerical aperture na 0.20 0.22 0.24 fiber cladding d cl - 125 m - fiber buffer d b - 250 m - fiber length l f 0.9 m 1 m - 1. all performance data measured at 10 w, 25c, beginning of life (bol). 2. weighted average "center of mass" spectral point at 25c at p o 3. change in ? mean with case temperature over t op
4 6398-l4 ti series specification for 0.15 na 1 parameter symbol minimum typical maximum laser characteristics cw output power p o - - 10 w mean wavelength 2 p 976 nm 973 nm 976 nm 979 nm spectral width (90% of maximum) ? - 3 nm 6 nm slope efficiency d 976 nm - 0.90 w/a - conversion efficiency - 46% - threshold current i th - 600 ma 850 ma operating current (bol) i op 976 nm - 12.3 a 13.5 a forward voltage v f - 1.81 v 2.0 v series resistance r s - 0.04 - recommended case temperature t c 20c 25c 40c wavelength tuning vs. temperature 3 ? / t - 0.35 nm/c - wavelength tuning vs. output power ? / p - 1.0 nm/w - fiber characteristics fiber core diameter d c - 105 m - fiber numerical aperture na 0.135 0.15 0.165 fiber cladding d cl - 125 m - fiber buffer d b - 250 m - fiber length l f 0.9 m 1 m - 1. all performance data measured at 10 w, 25c, beginning of life (bol). 2. weighted average "center of mass" spectral point at 25c at p o 3. change in ? mean with case temperature over t op fiber laser feedback isolation specification for -100e and -100f options wavelength range (nm) isolation (db) reflectivity (%) 1060?1100 > 30 > 99.9% 1050?1150 > 25 > 99.7%
absolute maximum ratings parameter symbol minimum typical maximum operating current i op - - 14 a reverse voltage v rvs - - 2.0 v case operating temperature 1 t op 15c - 50c storage temperature 2 t stg -30c - 70c lead soldering temperature, 10 s max t ls - - 300c relative humidity, non-condensing, ambient < 45c rh - - 85% electrostatic discharge (esd) 3 v esd - - 500 v fiber bend radius (long term deployment) 4 30 mm - - fiber axial pull force, 15 s - - 5 n fiber side pull force, 15 s - - 2.5 n 1. noncondensing, maximum 2. noncondensing, 2000 hours 3. c = 100 pf, r = 1.5 k , human body model, shown to be not damaging to its li characteristics or its reliability, i-v curves may change in this esd envir onment 4. minimum bend radius of 30 mm is for long term mechanical fiber reliability; however for 0.15 na some optical loss may occur and a minimum bend radius of 45 mm is recommended for layout with multiple fiber coils. ordering information for more information on this or other products and their availability, please contact your local jdsu account manager or jdsu directly at 1-800-498-jdsu (5378) in north america and +800-5378-jdsu worldwide or via e-mail at customer.service@jdsu.com. sample: l4-9897603-100e 5 6398-l4 ti series configurations product code wavelength range fiber na feedback protection l4-9897603-100e 973 ? 979 nm 0.22 yes l4-9897603-100f 973 ? 979 nm 0.15 yes
6398-l4 ti series north america : 800 498-jdsu (5378) website : www.jdsu.com worldwide : +800 5378-jdsu user safety safety and operating considerations the laser light emitted from this diode laser is invisible and may be harmful to the human eye. avoid looking directly into the diode laser or into the collimated beam along its optical axis when the device is in operation. caution: the use of optical instruments with this product will increase eye hazard. operating the diode laser outside of its maximum ratings may cause device failure or a safety hazard. power supplies used with the component must be employed such that the maximum peak optical power cannot be exceeded. cw diode lasers may be damaged by excessive drive current or switching transients. when power supplies are used, the diode laser should be connected with the main power on and the output voltage at zero. the current should be increased slowly while the diode laser output power and the drive current are monitored. device degradation accelerates with increased temperature, and therefore careful attention to minimizing the case temperature is advised. for example, life expectancy will decrease by a factor of four if the case is operated at 50c rather than 25c. a proper heatsink for the diode laser on a thermal radiator wi ll greatly enhance laser life. firmly mount the laser on a radiato r with a thermal impedance of less than 0.5c/w for increased reliability. esd protection?electrostatic discharge is the primary cause of unexpected diode laser failure. take extreme precaution to prevent esd. use wrist straps, grounded work surfaces, and rigorous antistatic techniques when handling diode lasers. labeling 21 cfr 1040.10 compliance because of the small size of these devices, each of the labels shown is attached to the individual shipping container. they are illustrated here to comply with 21 cfr 1040.10 as applicable under the radiation control for health and safety act of 1968. serial number identification label output power danger label *see manual invisible laser radiation* danger gaalas diode cw 10 w max. class iv laser product 3110 avoid eye or skin exposure to direct or scattered radiation jdsu 3 hongmian road futian free trade zone shenzhen 518038 made in: china serial: model: l4-abc123 l4-9897603-100e 10/05/08 l4-abc123 product specifications and descriptions in this document subject to change without notice. ? 2008 jds uniphase corporation 301 62548 000 1008 6398l4ti.ds.cl.ae october 2008
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