PowerMax-USB/ RS Sensors USB and RS-232 Laser Power Measurement Superior Reliability & Performance

T echnical SupportOperationalExcellenceSuperior CustomerServiceWarrantyOn-Time DeliveryC24 ProgramProduct Reliability For over 40 years, Coherent has been supplying you with the best laser measurement and beam diagnostic equipment available. We realize that while technical specifications greatly influence your purchasing decisions, you also must consider many other important criteria. In a recent customer survey we found that Product Reliability, Speed of Responsiveness, and Technical Support are the three top criteria when choosing a laser test and measurement supplier. That’s why we place as...

• Toll Free: (800) 343-4912 • Tel: (408) 764-4042 • Fax: (503) 454-5727 3 Product Overview PowerMax-USB/RS Sensors Coherent PowerMax-USB sensors provide plug and play laser power measurement directly on a PC without the need for additional electronic instrumentation. The measurement circuitry typically found in a standalone meter has been reduced in size to the extent that it can now fit inside a USB connector. The circuitry and USB connector have been adapted into a ‘PowerMax-USB’ cable that can be integrated to most Coherent power sensors providing accurate power measurements of all types of...

4 Superior Reliability & Performance • www.Coherent.com • [email protected] Product Overview PowerMax-USB/RS Sensors Thermopile Technology Thermopile sensors are a great all-purpose technology suitable for many lasers. They are used for measuring CW laser power, average power in pulsed lasers, and are often used to integrate the energy of long pulses. Thermopile sensors absorb incident laser radiation and convert it into heat. This heat ultimately flows to a heat sink that is held at ambient temperature by either convection-cooling or water-cooling. The temperature difference between the...

• Toll Free: (800) 343-4912 • Tel: (408) 764-4042 • Fax: (503) 454-5727 5 Product Overview PowerMax-USB/RS Sensors Long-pulse Energy Measurement with a Thermopile Thermopile sensors are most commonly used for average power measurements on pulsed and CW lasers. A unique capability of thermopile sensors is the ability to integrate the power of a single “long” laser pulse. “Long” pulse refers to pulses roughly 1 msec up to several seconds in pulse length. The instrumentation analyzes the output of the thermopile and applies the integration through the use of an algorithm that results in a Joules...

6 Superior Reliability & Performance • www.Coherent.com • [email protected] Measurement Accuracy = where U = ‘Percent Calibration Uncertainty’ and W = ‘Wavelength Accuracy’ Example: PowerMax-USB LM-10 used at 1064 nm U = 2% W = 1.5% Measurement Accuracy = = = 2.5% Applying Wavelength Compensation Accuracy PowerMax-USB/RS Sensors Overall measurement accuracy is a combination of calibration uncertainty (found in the sensor specification tables) and the wavelength compensation accuracy (found in the “Wavelength Compensation Accuracy” table, below). The combined accuracy is based upon practices...

• Toll Free: (800) 343-4912 • Tel: (408) 764-4042 • Fax: (503) 454-5727 7 PowerMax-USB/RS Sensors Model PS10 PS19Q PS19 PM3 Wavelength Range (nm) 300 to 11,000 300 to 2100 300 to 11,000 300 to 11,000 Power Range 100 ìW to 1W 100 ìW to 1W 100 ìW to 1W 500 ìW to 2W Max. Intermittent Power (W)(<5 min.) 3 Long-pulse Joules (J) 0.001 to 1 Noise Equivalent Power (ìW) 3 3 5 20 Maximum Thermal Drift1 (ìW) ±40 ±25 ±400 ±1000 Maximum Power Density (W/cm2) 500 Maximum Energy Density (mJ/cm2) 50 (10 ns, 1064 nm) Response Time (sec.)(o% to 95%) Speed-up On 1.7 1.6 1.6 1.9 Speed-up Off 3.6 3.0 3.0 4.1 Detector...

8 Superior Reliability & Performance • www.Coherent.com • [email protected] 51 mm (2.0 in.)20 mm(0.81 in.)Ø10 mm(0.4 in.)43 mm(1.69 in.)51 mm(2.0 in.)Adjustable165 mm to 220 mm(6.5 in. to 8.66 in.)51 mm(2.0 in.)76 mm(3.0 in.)Note: Detector Surfaceis 3.56 mm (0.14 in.) belowfront face of aperture plate PowerMax-USB/RS Sensors Model UV/VIS Wavelength Range (nm) 325 to 1065 Power Range 5 ìW to >100 mW (wavelength dependent, see chart on page 7) Noise Equivalent Power (nW) 100 Maximum Power Density (W/cm2) 20 Response Time (sec.) Speed-up On - Speed-up Off (o% to 100%) 0.1 Detector Element Silicon...

• Toll Free: (800) 343-4912 • Tel: (408) 764-4042 • Fax: (503) 454-5727 9 Power 1 ìW10 ìW100 ìW1 mW10 mW100 mW1W0Wavelength (nm)20040060080010001200Minimum Power (W)Saturation Power (W) PowerMax-USB/RS Sensors UV/VIS Quantum Overview Measurement Linearity Like all silicon photodiodes, the UV/VIS Quantum sensor has temperature sensitivity in the infrared region. At 1064 nm, for example, it has a 0.5%/ºC thermal coefficient. Measurement error of up to 2% are present at 1064 nm after a 10 minute warm-up time due to the electronics inside the sensor, and additional error can be present if the ambient...

10 Superior Reliability & Performance • www.Coherent.com • [email protected] PowerMax-USB/RS Sensors Model LM-3 LM-10 LM-45 Wavelength Range (ìm) 0.25 to 10.6 Power Range 10 mW to 3W 10 mW to 10W 100 mW to 25W Max. Intermittent Power (W)(<5 min.) 10 12 45 Long-Pulse Joules (J) 0.5 to 10 0.5 to 10 0.5 to 50 Noise Equivalent Power (mW) 0.4 0.4 2 Maximum Power Density (kW/cm2) 6 Maximum Energy Density (mJ/cm2) 600 (10 ns, 1064 nm) Response Time (sec.)(o% to 95%) Speed-up On 1.6 1.6 2.6 Speed-up Off 3.5 3.5 3.9 Detector Coating Broadband Detector Element Thermopile Optic None Detector Diameter...

• Toll Free: (800) 343-4912 • Tel: (408) 764-4042 • Fax: (503) 454-5727 11 Model PM1K-36C LM-1000 Wavelength Range (ìm) 0.25 to 10.6 0.25 to 10.6 Power Range (W) 1 to 1000 1 to 1000 Noise Equivalent Power (mW) 20 Maximum Power Density1 (kW/cm2) 1 to 2.5 Maximum Energy Density (mJ/cm2) 500 Response Time (sec.)(o% to 95%) Speed-up On 2.3 3.5 Speed-up Off 6.0 6.1 Detector Coating Broadband Detector Element Thermopile Detector Diameter (mm) 36 38 Calibration Uncertainty (%) ±5 Power Linearity (%) ±1 Spectral Compensation Accuracy (%) ±1.5 Calibration Wavelength (nm) 10,600 Cooling Method Water Cable...