The CPM+ delivers highly accurate laser power measurements — regardless of beam size, position, or wavelength — thanks to its calorimetric design and advanced absorber. Its robust construction and maintenance-free ultrasonic flow meter ensure long-term reliability, even in demanding environments. Combined with PRIMES diagnostic tools, it provides all critical data to ensure process stability and enable targeted optimization.
• Highly accurate, repeatable measurements
• Compact, robust design for up to 30 kW
• Accuracy of 3%
• Independent of beam size, position, and wavelength
• Extremely high absorption, minimal back-reflection
• Extreme short time constants of under 15 s
• Full integration with FM+, BM+ and LDS for complete beam diagnostics
Tech Corner
At PRIMES, all laser power measurements are based on the calorimetric principle — the most stable and linear method available. However, to achieve true accuracy, independence of external factors such as beam position, diameter, or wavelength is essential. The CPM+ was developed with exactly this goal in mind — and it delivers: by design, it ensures highly accurate and repeatable results regardless of varying beam conditions.
The key to the CPM+’s superior performance lies in its specially engineered absorber, featuring a structured surface and an industry-grade, wear-resistant coating. This unique combination enables extremely high absorption across the entire industrial wavelength spectrum — from blue to green to NIR — with minimal back-reflection. Even off-centered
or inclined laser beams are absorbed efficiently, ensuring consistently accurate power measurements regardless of beam position or incidence angle.
The CPM+ (F-10 and F-30) is also equipped with a novel ultrasonic flow meter, replacing mechanical components and eliminating wear-prone parts. The result: greater long-term reliability, minimal maintenance, and precise thermal readings even during extended operation.
Despite its small size, the CPM+ product family handles a wide power range from 0.1 kW up to 30 kW of laser power. It can be used as a permanent absorber, making it ideal for service tasks, lab use, long-duration testing, and even direct power measurement from fiber-coupled lasers. And when paired with our LaserDiagnosticsSoftware (LDS) or other PRIMES tools like the FocusMonitor FM+ or BeamMonitor BM+, it becomes a powerful component in any laser diagnostics setup. This combination ensures that you capture all relevant information about your laser beam — from power to focus position and beam shape — giving you the insights needed to validate process functionality and implement targeted optimizations.
