HIGH POWER QUASI-CW LASER DIODE L8411 PRELIMINARY DATA High power Quasi-CW operation FEATURES High optical power : 50 to 100 W/bar High stability Long life High cost performance APPLICATIONS Pumping source for solid state lasers Materials processing Welding Soldering Medical systems Our high power Quasi-CW laser diode, L8411, features several advantages such as high stability with long life, high cost performance with compact structure, and higher peak intensity. It can be applied as light source to pump solid state lasers, for material processing like welding or soldering, and for medical systems. The lasing areas consist of small laser emitters arranged in line and are thus called Bar structure. A high Quasi-CW output power as high as 1kW at peak was achieved by stacking ten Bars. Cooling methods can be selected from Peltier-cooling, water-cooling and Funryu-cooling (patent pending : Japan 8-139479, WO 00/11717). A high power laser module with a focusing lens and a driving electronics are optionally available. ABSOLUTE MAXIMUM RATINGS (Each bar) High Duty Ratio Type Unit 105 55 W 2.0 2.0 V Tw 200 200 sec DR 1 20 % Symbol Low Duty Ratio Type Radiant Output Power / bar e Reverse Voltage VR Pulse Duration Duty Ratio Parameter Operating Temperature Top +15 to +35 Storage Temperature Tstg -20 to +40 c c CHARACTERISTICS (Each bar, Ta=20c) Parameter Symbol Radiant Output Power / bar e IF Forward Current Peak Emission Wavelength Spectral Radiation Half Bandwidth p Forward Voltage VF Beam Spread Angle : Parallel // : Vertical Low Duty Ratio Type Conditions Value High Duty Ratio Type Value Conditions 100 e=100W e=100W e=100W e=100W FWHM 120 808 4 2.0 10 35 50 e=50W e=50W e=50W e=50W FWHM Unit W 80 A 808 nm 5 nm 1.9 V 10 (degree) 35 (degree) Ith 25 20 Array Length - 10 10 mm Maximum Number of Stacks - 25 6 stack Lasing Threshold Current *Contact sales stuff for emitting wave-length and radiant output power (e) other than above. Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions. Specifications are subject to change without notice. No patent rights are granted to any of the circuits described herein. '2000 Hamamatsu Photonics K.K. A HIGH POWER QUASI-CW LASER DIODE L8411 Figure 1: Radiant Output Power vs. Forward Current Figure 2: Radiant Output Power vs. Forward Current High Duty Ratio Type (Typ.) Low Duty Ratio Type (Typ.) 100 120 Pulse Duration=200s Frequency=1KHz RADIANT OUTPUT POWER (W) RADIANT OUTPUT POWER (W) Pulse Duration=200s Frequency=50Hz 100 80 60 40 20 80 60 40 20 0 0 100 50 0 0 150 20 FORWARD CURRENT (A) 100 80 Figure 4: Relationship Between Total Optical Output Power and Duty Ratio Figure 3: Typical Emission Spectrum 100 2500 TOTAL OPTICAL OUTPUT POWER (W) RELATIVE RADIANT OUTPUT POWER (%) 60 40 FORWARD CURRENT (A) 80 60 40 20 1000 Funryu-cooling 500 Water-cooling Peltier-cooling 100 50 10 1 0 799 802 805 808 811 814 1 0.1 817 10 20 DUTY RATIO (%) WAVELENGTH (nm) Figure 5: Dimensional Outline (Unit : mm) High Duty Ratio Type (Water-cooling) 10.6 Low Duty Ratio Type (Peltier-cooling) 20.0 30.0 14.5 30.0 CATHODE(-) 10.0 7.9 CATHODE(-) ANODE(+) 14.0 ANODE(+) http://www.hamamatsu.com HAMAMATSU PHOTONICS K.K., Laser Group, Sales Dept. 5000, Hirakuchi, Hamamatsu City, Shizuoka, 434-8601, Japan, Telephone: (81)53-584-0227, Fax: (81)53-584-0228, E-mail: laser-g@lsr.hpk.co.jp U.S.A.: Hamamatsu Corporation:360 Foothill Road, P.O. BOX 6910, Bridgewater, N.J. 08807-0910, U.S.A.Telephone: (1)908-231-0960, Fax: (1)908-231-1218 E-mail: usa@hamamatsu.com Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49)8152-375-0, Fax: (49)8152-2658, E-mail: info@hamamatsu.de France: Hamamatsu Photonics France S.A.R.L.: 8, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: 33(1) 69 53 71 00, Fax: 33(1) 69 53 71 10, E-mail: france@hamamatsu.com United Kingdom: Hamamatsu Photonics UK Limited: 2 Howard Court, 10 Tewin Road, Welwyn Garden City, Hertfordshire AL7 1BW, United Kingdom, Telephone: (44)1707-294888, Fax: (44)1707-325777, E-mail: info@hamamatsu.co.uk North Europe: Hamamatsu Photonics Norden AB: Smidesv gen 12, SE-171-41 Solna, Sweden, Telephone: (46)8-509-031-00, Fax: (46)8-509-031-01, E-mail: info@hamamatsu.se Cat. No. LLD1008E01 Italy: Hamamatsu Photonics Italia S.R.L.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: (39)02-935 81 733, Fax: (39)02-935 81 741, E-mail: info@hamamatsu.it OCT. 2000 SI Printed in Japan (200)