SLD324ZT High-Power Density 2W Laser Diode Description The SLD324ZT is a gain-guided, high-power density laser diode with a built-in TE cooler. A new flat, square package with a low thermal resistance and an in-line pin configuration is employed. Fine tuning of the wavelength is possible by controlling the laser chip temperature. Features • High power Recommended optical power output: Po = 2.0W • Low operating current: Iop = 2.5A (Po = 2.0W) • Newly developed flat package with built-in photodiode, TE cooler and thermistor Applications • Solid state laser excitation • Medical use • Material processes • Measurement Equivalent Circuit TE Cooler Structure GaAlAs quantum well structure laser diode Absolute Maximum Ratings (Tth = 25°C) • Optical power output Po • Reverse voltage VR LD PD • Operating temperature (Tth) Topr • Storage temperature Tstg • Operating current of TE cooler IT TH 2.2 2 15 –10 to +30 –40 to +85 4.0 W V V °C °C A 1 2 3 LD 4 5 6 7 8 PD 9 10 11 12 Pin Configuration (Top View) No. Function No. Function 1 TE Cooler (negative) 7 LD (cathode) 2 TE Cooler (negative) 8 LD (cathode) 3 Thermistor 9 PD (cathode) 4 Thermistor 10 PD (anode) 5 LD (anode) 11 TE Cooler (positive) 6 LD (anode) 12 TE Cooler (positive) 1 12 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– E93322B81-PS SLD324ZT Electrical and Optical Characteristics (Tth: Thermistor temperature, Tth = 25°C) Item Symbol Min. Conditions Typ. Max. Unit 0.6 1.0 A Threshold current Ith Operating current Iop PO = 2.0W 2.5 3.5 A Operating voltage Wavelength∗1 Vop PO = 2.0W 2.2 3.0 V λp PO = 2.0W 790 840 nm Monitor current Imon PO = 2.0W VR = 10V 0.15 0.8 3.0 mA 20 30 40 degree 4 9 17 degree ±100 µm ±3 degree Perpendicular Radiation angle (F. W. H. M.∗) Positional accuracy θ⊥ Parallel θ// Position ∆X, ∆Y Angle ∆φ⊥ PO = 2.0W PO = 2.0W Differential efficiency ηD PO = 2.0W Thermistor resistance Rth Tth = 25°C 0.65 1.0 W/A 10 kΩ ∗ F. W. H. M. : Full Width at Half Maximum ∗1 Wavelength Selection Classification Type Wavelength (nm) SLD324ZT-1 795 ± 5 SLD324ZT-2 810 ± 10 SLD324ZT-3 830 ± 10 Type Wavelength (nm) SLD324ZT-21 798 ± 3 SLD324ZT-24 807 ± 3 SLD324ZT-25 810 ± 3 Handling Precautions Eye protection against laser beams The optical output of laser diodes ranges from several mW to 3W. However the optical power density of the laser beam at the diode chip reaches 1MW/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. Lens Laser diode Optical material Safety goggles for protection from laser beam IR fluorescent plate C ATC AP Optical boad Optical power output control device temperature control device –2– SLD324ZT Example of Representative Characteristics Optical power output vs. Forward current characteristics Optical power output vs. Monitor current characteristics 3 2.5 Tth = 15°C Tth = 25°C Tth = 0°C Tth = 15°C Po – Optical power output [W] Po – Optical power output [W] 2.5 2 Tth = –10°C Tth = 30°C 1.5 1 0.5 0 0 0.5 1 1.5 2 2.5 3 2 Tth = 0°C Tth = 30°C 1 0.5 0 3.5 Tth = 25°C Tth = –10°C 1.5 0 0.5 IF – Forward current [A] 1 Imon – Monitor current [mA] Threshold current vs. Temperature characteristics Dependence of wavelength 1 830 PO = 2.0W λp – Wavelength [nm] Ith – Threshold current [A] 820 810 800 790 0.1 –10 0 10 20 780 –10 30 Tth – Thermistor temperature [°C] 0 10 20 30 Tth – Thermistor temperature [°C] Tth = 25°C Tth = 25°C –90 Radiation intensity (optional scale) Power dependence of far field pattern (Parallel to junction) Radiation intensity (optional scale) Power dependence of far field pattern (Perpendicular to junction) PO = 2.0W PO = 1.5W PO = 1.0W PO = 0.5W –60 –30 0 30 60 90 –90 Angle [degree] PO = 2.0W PO = 1.5W PO = 1.0W PO = 0.5W –60 –30 0 30 Angle [degree] –3– 60 90 SLD324ZT Differential efficiency vs. Temperature characteristics Termistor chacteristics 1.5 Rth – Thermister resistance [kΩ] ηD – Differential efficiency [mW/mA] 50 1 0.5 0 –10 0 10 20 10 5 1 –10 0 30 Tth – Termistor temperature [°C] 10 20 30 40 50 60 70 Tth – Termistor temperature [°C] TE cooler characteristics TE cooler characteristics 1 TE cooler characteristics 2 15 40 15 40 Tc = 32°C Tth = 25°C IT = 4A 20 3A 2A 5 ∆T 40 60 3A ∆T 3A 10 5 vs Q 4A 2A 4A 20 V 2A Q 0 3A 2A 0 vs 20 10 vs 10 30 4A 80 100 0 0 ∆T – Temperature difference [°C] 0 20 40 60 80 ∆T – Temperature difference [°C] ∆T: Tc – Tth Tth: Thermistor temperature Tc: Case temperature –4– 100 0 VT – Pin voltage [V] ∆T vs V Q – Absorbed heat [W] 10 VT – Pin voltage [V] 30 ∆T Q – Absorbed heat [W] IT = SLD324ZT Power dependence of spectrum Tth = 25°C Po = 0.8W Tth = 25°C Po = 1.2W Relative radiant intensity 1.00 Relative radiant intensity 1.00 0.00 790 0.00 790 800 Wavelength [nm] 800 Wavelength [nm] Tth = 25°C Po = 1.6W Tth = 25°C Po = 2.0W Relative radiant intensity 1.00 Relative radiant intensity 1.00 0.00 790 0.00 790 800 Wavelength [nm] 800 Wavelength [nm] –5– SLD324ZT Temperature dependence of spectrum (Po = 2W) Tth = –10°C Tth = 0°C Relative radiant intensity 1.00 Relative radiant intensity 1.00 0.00 0.00 780 810 780 Wavelength [nm] 810 Wavelength [nm] Tth = 25°C Tth = 30°C Relative radiant intensity 1.00 Relative radiant intensity 1.00 0.00 0.00 780 810 780 Wavelength [nm] 810 Wavelength [nm] –6– SLD324ZT Unit: mm M-272 + 0.06 4 – φ3.0 0 Window Glass 8.0 ± 0.5 φ5.0 36.0 ± 0.5 ∗10.0 ± 0.1 20.0 ± 0.05 18.0 41.0 ± 0.05 12 – φ0.64 2.54 46.0 ± 0.5 0.8 MAX 23.0 SONY CODE 13.05 ± 0.1 9.0 ± 0.2 ∗20.5 ± 0.1 3.0 Reference Plane LD CHIP 36.0 ± 0.5 12.35 Package Outline ∗Distance between pilot hole and emitting area. M-272 EIAJ CODE JEDEC CODE PACKAGE WEIGHT –7– 118 g