COMMERCIAL LASERS High-Power 10 W 9xx nm Fiber-Coupled Diode Laser 6398-L4ti Series Key Features • 976±3 nm wavelength • Full fiber laser feedback protection • 10 W output power • High reliability • 105 µm aperture • 0.22 or 0.15 NA • Isolated electrical contacts Application • Fiber laser pumping The JDSU L4ti Series expands the L4 and L4i 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 L4ti is specified at ±3 nm around 976 nm for pumping fiber lasers in this narrow pump absorption bandwidth. A specific design without changing the L4t footprint, the L4ti 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-L4ti series diode lasers offer 10W of power from a 105 µm fiber. In addition, L4ti 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. NORTH AMERICA : 800 498-JDSU (5378) WORLDWIDE : +800 5378-JDSU WEBSITE : www.jdsu.com 6398-L4ti SERIES 2 (Specifications in mm unless otherwise noted.) Standard Tolerances mm: x.x = ±0.5 x.xx = ±0.25 Dimensions Diagram 11.8 2x 4.3 2X A 2.5 2x 1 13 17 Strain relief boot Metal case B 7.5 31 10 8.5 (3.9 ) 1.5 3.9 7.7 2.54 Pinout Pin Description A B Laser cathode (-) Laser anode (+) 6398-L4ti SERIES 3 Specifications for 0.22NA1 Parameter Laser Characteristics CW output power Mean wavelength2 Spectral width (90% of maximum) Slope efficiency Conversion efficiency Threshold current Operating current (BOL) Forward voltage Series resistance Recommended case temperature Wavelength tuning vs. temperature3 Wavelength tuning vs. output power Fiber Characteristics Fiber core diameter Fiber numerical aperture Fiber cladding Fiber buffer Fiber length 1. All performance data measured at 10 W, 25°C, beginning of Life (BOL). 2. Weighted average "center of mass" spectral point at 25°C at PO 3. Change in Δλ mean with case temperature over Top Symbol Minimum Typical Maximum Po λp 976 nm Δλ ηD 976 nm η Ith Iop 976 nm Vf Rs Tc Δλ/ΔT Δλ/ΔP 973 nm 20°C - 976 nm 3 nm 0.90 W/A 48% 600 mA 11.8 A 1.81 V 0.04 Ω 25°C 0.35 nm/°C 1.0 nm/W 10 W 979 nm 6 nm 850 mA 13.0 A 2.0 V 40°C - dc NA dcl db lf 0.20 0.9 m 105 µm 0.22 125 µm 250 µm 1m 0.24 - 6398-L4ti SERIES 4 Specification for 0.15 NA1 Parameter Laser Characteristics CW output power Mean wavelength2 Spectral width (90% of maximum) Slope efficiency Conversion efficiency Threshold current Operating current (BOL) Forward voltage Series resistance Recommended case temperature Wavelength tuning vs. temperature3 Wavelength tuning vs. output power Fiber Characteristics Fiber core diameter Fiber numerical aperture Fiber cladding Fiber buffer Fiber length Symbol Minimum Typical Maximum Po λp 976 nm Δλ ηD 976 nm η Ith Iop 976 nm Vf Rs Tc Δλ/ΔT Δλ/ΔP 973 nm 20°C - 976 nm 3 nm 0.90 W/A 46% 600 mA 12.3 A 1.81 V 0.04 Ω 25°C 0.35 nm/°C 1.0 nm/W 10 W 979 nm 6 nm 850 mA 13.5 A 2.0 V 40°C - dc NA dcl db lf 0.135 0.9 m 105 µm 0.15 125 µm 250 µm 1m 0.165 - 1. All performance data measured at 10 W, 25°C, beginning of Life (BOL). 2. Weighted average "center of mass" spectral point at 25°C at PO 3. Change in Δλ mean with case temperature over Top Fiber Laser Feedback Isolation Specification for -100E and -100F Options Wavelength Range (nm) Isolation (dB) Reflectivity (%) 1060–1100 1050–1150 > 30 > 25 > 99.9% > 99.7% 6398-L4ti SERIES 5 Absolute Maximum Ratings Parameter Symbol Minimum Typical Maximum Operating current Reverse voltage Case operating temperature1 Storage temperature2 Lead soldering temperature, 10 s max Relative humidity, non-condensing, ambient < 45°C Electrostatic discharge (ESD)3 Fiber bend radius (long term deployment)4 Fiber axial pull force, 15 s Fiber side pull force, 15 s Iop Vrvs Top Tstg Tls RH Vesd 15°C -30°C 30 mm - - 14 A 2.0 V 50°C 70°C 300°C 85% 500 V 5N 2.5 N 1. Noncondensing, maximum 2. Noncondensing, 2000 hours 3. C = 100 pF, R = 1.5 kΩ, human body model, shown to be not damaging to its LI characteristics or its reliability, I-V curves may change in this ESD environment 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. Configurations Product Code Wavelength Range Fiber NA Feedback Protection L4-9897603-100E L4-9897603-100F 973 – 979 nm 973 – 979 nm 0.22 0.15 Yes Yes 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 [email protected]. Sample: L4-9897603-100E 6398-L4ti SERIES 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 50°C rather than 25°C. A proper heatsink for the diode laser on a thermal radiator will greatly enhance laser life. Firmly mount the laser on a radiator with a thermal impedance of less than 0.5°C/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 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 L4-ABC123 Serial: L4-ABC123 Model: L4-9897603-100E JDSU 3 Hongmian Road Futian Free Trade Zone Shenzhen 518038 Made in: China 10/05/08 21 CFR 1040.10 Compliance Output Power Danger Label DANGER INVISIBLE LASER RADIATION* AVOID EYE OR SKIN EXPOSURE TO DIRECT OR SCATTERED RADIATION GaAlAs Diode CW 10 W max. CLASS IV LASER PRODUCT *SEE MANUAL NORTH AMERICA : 800 498-JDSU (5378) 3110 WORLDWIDE : +800 5378-JDSU Product specifications and descriptions in this document subject to change without notice. © 2008 JDS Uniphase Corporation 30162548 000 1008 WEBSITE : www.jdsu.com 6398L4ti.DS.CL.AE October 2008