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| SLD326YT High-Optical Power Density 4W Laser Diode Description The SLD326YT is a high optical density laser diode. This product employs the compatible package newly developed, so that the thermal and power control circuits can be designed independently. Features * High-optical power output Recommended optical power output: PO = 4.0W * High-optical power density: 4W/400m (Emitting line width) Applications * Solid state laser excitation * Medical use * Material processing * Measurement Structure GaAlAs quantum well structure laser diode Absolute Maximum Ratings (Tth = 25C) * Optical power output PO 4.4 * Reverse voltage VRLD 2 PD 15 * Operating temperature (Tth) Topr -10 to +30 * Storage temperature Tstg -40 to +85 * Operating current of TE cooler IT 4.0 Pin Configuration (Top View) M-288 Equivalent Circuit TE Cooler Case LD TH PD W V V C C A 1 3 4 5 6 7 8 9 10 No. 1 2 3 4 5 Case Function TE Cooler (negative) -- No. 6 7 8 9 10 Function Thermistor LD (cathode) PD (anode) PD (cathode) TE Cooler (positive) LD (anode) Thermistor Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits. -1- E95Z12A97-PS SLD326YT Optical and Electrical Characteristics Item Threshold current Operating current Operating voltage Wavelength Radiation angle Perpendicular Parallel Position Positional accuracy Angle Symbol Ith Iop Vop P // X, Y // D Imon Rth PO = 4.0W PO = 4.0W PO = 4.0W PO = 4.0W VR = 10V Tth = 25C PO = 4.0W PO = 4.0W PO = 4.0W PO = 4.0W PO = 4.0W Conditions (Tth = Thermistor temperature, Tth = 25C) Min. Typ. 1.0 4.0 5.5 2.4 790 25 5 30 10 Max. 2.0 8.0 2.8 840 40 14 100 3 4 0.5 0.2 0.85 1.5 10 1.5 4.0 Unit A A V nm degree degree m degree degree W/A mA k Differential efficiency Monitor current Thermistor resistance Wavelength Selection Classification Type SLD326YT-1 SLD326YT-2 SLD326YT-3 Type SLD326YT-21 SLD326YT-24 SLD326YT-25 Wavelength (nm) 795 5 810 10 Marking Production factory 3 9 1 830 10 Wavelength (nm) 798 3 807 3 810 3 Lot No. Categories are not specified by marking. Handling Precautions Eye protection against laser beams The optical output of laser diodes ranges from several mW to 4W. However the optical power density of the laser beam at the diode chip reaches 1.5MW/cm2. Unlike gas lasers, since laser diode beams are divergent, uncollimated laser diode beams are fairly safe at a laser diode. For observing laser beams, ALWAYS use safety goggles that block infrared rays. Usage of IR scopes, IR cameras and fluorescent plates is also recommended for monitoring laser beams safely. Laser diode Lens Optical material Safety goggles for protection from laser beam IR fluorescent plate Optical board Optical power output control device Temperature control device -2- SLD326YT Example of Representative Characteristics Optical power output vs. Forward current characteristics 5 Tth = 25C 4 0.8 1.0 Tth = 25C PO = 4.0W Far field pattern PO-Optical power output [W] Relative radiant intensity 3 0.6 2 0.4 // 0.2 1 0 1.5 3 4.5 6 7.5 -40 -20 0 20 40 IF-Forward current [A] Angle [degree] Oscillation wavelength 1.0 Tth = 25C PO = 4.0W 0.8 50 Thermistor characteristics 0.6 Rth-Thermistor resistance [k] 792 796 800 804 808 Wavelength [nm] Relative radiant intensity 10 0.4 5 0.2 0 -10 0 10 20 30 40 50 60 70 Tth-Thermistor temperature [C] TE cooler characteristics 40 Tc = 33C 20 40 TE cooler characteristics 20 Tc = 25C 15 TvsV T = 4A 3A 20 2A 10 1A 1A 0 80 0 0 20 40 60 T-Temperature difference [C] T : Tc - Tth Tth : Thermistor temperature Tc : Case temperature 2A 3A 5 TvsQ T = 4A 0 80 10 Q-Absorbed heat [W] Q-Absorbed heat [W] VT-Pin voltage [V] TvsV T = 4A 20 2A 10 1A 1A 0 0 20 40 60 T-Temperature difference [C] 2A 3A TvsQ T = 4A 5 3A 10 T : Tc - Tth Tth : Thermistor temperature Tc : Case temperature -3- VT-Pin voltage [V] 30 30 15 SLD326YT Package Outline Unit: mm M-288 + 0.08 4 - 4.04 - 0.03 38.60 0.15 19.05 0.15 5.0 Window Glass R1 .0 R1 .0 1.0 9 - 1.0 2.54 44.45 0.50 LD Chip 31.75 0.50 0.9 MAX 3.6 12.8 150g - 4 4 - 31.75 0.50 3.0 14.9 0.3 17.8 0.3 Reference Plane 19.30 0.15 SONY CODE EIAJ CODE JEDEC CODE 17.0 26.4 M-288 PACKAGE WEIGHT -4- |
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