Manual of 980nm Fiber Coupled Laser Diode Module G098PU1600M G098PU1750M G098PU11300M G098PU25W G098PU209W G098PU312W G098PU322W 02.04.2012 Manual G098PU Series 1 of 10 1 Introduction Thank you for choosing this high power fiber coupled Laser Diode for your application. Please read that manual carefully before using this product. If there is any question about this manual, please contact us. The 980nm series high power Fiber coupled Laser Diodes with optimized QW structure have a high reliability, high performance. The MOCVD technical is used for epitaxy to get a high quality epi-wafer. The 980nm series high power fiber coupled Laser Diode module can get up to 25W multimode fiber coupled output at CW and N.A. 0.12 & 0.22. It can be applied in a wide field such as laser pumps, medical, target designator, free-space communication. 02.04.2012 Manual G098PU Series 2 of 10 2 Specifications 2.1 optical and electrical specification Type G098PU 1600M G098PU 1750M G098PU 11300M G098PU 25W G098PU 209W G098PU 312W G098PU32 2W Optical specification Rated output optical power Pf* (W) 0.6 0.75 1.3 5 9 12 22 Central Wavelength λc* (nm) 980 980 980 980 980 980 980 Central Wavelength λc* (nm) 980±10 <4 980±10 <4 980±10 <4 980±10 <5 980±10 <5 980±10 <7 980±10 <7 0.3 0.3 0.3 0.3 0.3 0.3 0.3 50 100 400 400 0.22 0.22 0.22 (0.12) 1 1 1 FC/ST/SMA-905 700 700 0.12 0.22 1 100 0.22 (0.12) 1 1 1 250 250 500 250 500 250 500 Operating current Io (mA) 1250 1250 2500 1250 2500 1250 2500 Operating voltage Vf* (V) <2 <2 <2 <14 <14 <35 <35 Slope efficiency Es* (W/A) >0.6 >0.75 >0.65 >5 >4.5 >12 >11 Resistance Rd* (Ω) <0.2 <0.2 <0.2 <1.4 <1.4 <3.5 <3.5 Central Wavelength tolerance (nm) Wavelength temperature coefficient (nm/°C) Fiber specification Fiber Core Size (µm) N.A. 0.22 Fiber length (m) Connector Electrical specification Threshold current Ith* (mA) P1- Package Package P2- Package P3- Package Absolute Maximum Ratings 2 2 2 14 14 35 35 operating temperature To (°C) -10...45 -10...45 -10...45 -10...45 -10...45 -10...45 -10...45 Storage temperature Tstg (°C) -40...70 -40...70 -40...70 -40...70 -40...70 -40...70 -40...70 Reverse Voltage Vr (V) Parameter notes: * Rated output optical power PF: Laser Diode output power rating. * Central Wavelength λc & Spectral width Δλ: While the laser diode is at its rated output optical power, the wavelength at its emission spectrum curve with highest relative strengths is the central wavelength λc, the wavelength width between 1/2 highest strengths of both sides of the emission spectrum is Δλ. * Threshold current Ith : Current when Laser Diode begins lasing. * Operating current Io: Current when Laser Diode at rated output power. * Operating voltage Vf: Voltage of both ends of the Laser Diode when it at rated output power. 02.04.2012 Manual G098PU Series 3 of 10 * Slope efficiency Es: Characterization of the photo electronic conversion efficiency of Laser Diode after the lasing begins; Es=ΔP/ΔI, where ΔP is the increment of output power corresponding to the increment of driving current ΔI. * Resistance Rd: Rd=ΔV/ΔI, where ΔV is the increment of voltage of laser diode corresponding to the increment of driving current ΔI. 2.2 Typical P-I/V-I curve Note: The testing sample is part# G098PU25W. 02.04.2012 Manual G098PU Series 4 of 10 2.3 Dimension size 2.3.1 P1 Package Dimensions: PD+ PD LD LD + 02.04.2012 Manual G098PU Series 5 of 10 2.3.2 P2 Package Dimensions: 2.3.3 P3 Package Dimensions: 02.04.2012 Manual G098PU Series 6 of 10 3 Laser safety operating instructions 3.1 Laser usage requirements in environment A ultra-clean environment should be provided for operating the LD. The operating temperature should be controlled at –10 °C … 45 °C. Laser safety warning signs should be posted in the working place. 3.2 The requirements on the power supply driving the LD Constant-current should be available for power supply. The power supply should have the ability to avoid current or voltage surge at any condition (during start-up, intermittence or open circuit). The surge would result in instant increase of optical power, which can cause COMD (catastrophic optical mirror damage). High power Laser Diodes could operate in forward voltage. The reverse current and voltage should not be higher than 25 µA and 3 V, respectively. 3.3 Laser operating requirements Please check the laser safeguard before used the LD. More information about the laser safe is mentioned in “laser safe” section of this manual. The semiconductor Laser Diode is a sensitive electronic device. Do not ship or store near strong electrostatic, electromagnetic, magnetic or radioactive fields. Please observe precaution for handling electrostatic sensitive devices, such as wearing antistatic wrist straps, use anti-static packaging material and tools when operation. Shut off the power supplier before connecting the LD with the power supplier. To shut off the LD please decrease the current to zero gradually then shut off the power supply. 02.04.2012 Manual G098PU Series 7 of 10 The operating current of laser must not be higher than the given rate current. The excessive current would accelerate aging and shorten lifetime, even damage the LD. Keep the fiber pigtail clean. In non-working environment, you must use the protection case to avoid fiber pigtail from being polluted. If you need to clean the fiber pigtail, use ethanol or water-free alcohol cotton balls and wipe fiber pigtail gently. Fiber pigtail Fiber pigtail protection case Fiber pigtail protection case a) b) Fiber pigtail LD must be taken out of the fiber protection case before it starts to work. Please remove the short-circuit bridge when you want the laser to work. In non-working environment, the short-circuit bridge must be used between electrodes to protect laser. It is especially important to use the short-circuit bridge when you weld the electrodes. Short-circuit bridge a) 02.04.2012 Manual G098PU Series 8 of 10 Short-circuit bridge b) When laser is working, please don’t point it straight to the fiber as shown below the yellow part, in order to prevent the fiber protection case from being damaged by highpower laser generated heat. Bending diameter of the fiber cannot be allowed to be less than 4cm. When bending the fiber, please make sure the starting point is away larger than 4cm from the fiber root. When moving the laser, please don`t directly use fiber (yellow part). Not obeying these rules may cause fracture of the laser fiber from the root. Fiber root Fiber protection case Bending diameter D: D≥4cm Make sure that the module and the fiber are in the same plane. √ 02.04.2012 √ Manual G098PU Series 9 of 10 × 3.4 Cooling system High-power semiconductor Laser Diodes are temperature-sensitive devices. High temperature will affect its performance. Its lifetime may also be shortened by working at high temperature. So the generated heat must be removed in time when the LD is working. Water cooling system or TEC system is recommended for keeping the LD working at appropriate temperature. 4 Laser safety instructions High power laser diodes are high energy laser devices. It is harmful to human body and health. Any personnel working with or around open lasers must be aware of the following: • Exposure to the laser beam may cause physical burns and can cause severe eye damage. Proper eye protection should be used at all times. All eye protection should be appropriate for the radiation wavelength generated by the laser in use. • Exposure to the laser beam may cause ignition of volatile or combustible materials. • Never look directly into the laser output port. • Interlock all rooms in which open beams may be present and post appropriate warnings on or near the doors. Access to these rooms should be limited to properly trained technicians when lasers are in use. • Use appropriate protective coverings over all beam paths whenever possible. • Lasers and optical elements should be positioned to keep the beam and reflections below eye level. 02.04.2012 Manual G098PU Series 10 of 10