Laser power meters are designed to measure laser output power and stability. PLC Optoelectronics offers two core types—thermopile and photodiode meters—both delivering high accuracy and easy operation. These instruments meet real-world demands for laser power measurement and analysis and are widely used in education, research, industry, and medical fields.

Thermopile Power Meter

Working Principle: Based on the thermoelectric effect, the device absorbs laser energy to generate heat, which is transferred to both faces of the thermopile. The resulting temperature difference creates a thermoelectric voltage, which the instrument measures to calculate the corresponding laser power. A broadband absorbing coating ensures accurate capture of lasers across a wide wavelength range.

Key Features of Thermopile Meters：

Thermopile Model List：

Handheld Thermopile Laser Power Meter

Handheld Thermopile Power Meter: Compact and lightweight for easy portability. Offers a broad spectral range with high measurement accuracy, and features an LCD display for intuitive readings and straightforward operation.

Working Principle: Converts incoming light into an electrical signal via a thermopile detector. The generated current or voltage is amplified, digitized, and processed to produce a numerical power value shown on the display.

Key Features of Handheld Thermopile Meters:

Handheld Thermopile Model List：

Photodiode Power Meter

Working Principle: Based on the photoelectric effect, a photosensitive detector (e.g., silicon photodiode) converts incoming laser photons into an electrical current. The detector exhibits high sensitivity within its specified wavelength range, and the instrument calculates laser power by measuring the magnitude of this current.

Key Features of Photodiode Meter：

Photodiode Model List：

Integrating Sphere Photodiode Laser Power Meter

Integrating Sphere Photodiode Power Meter: Utilizes a highly scattering integrating sphere to uniformly distribute the source’s light across the inner surface. After multiple reflections and diffusions, the light is captured by a photodetector, and the measured intensity is used to calculate the source’s output power. The sphere’s interior is coated with a high-reflectivity material to minimize light loss and ensure maximum measurement accuracy.

Key Features of Integrating Sphere Meter：

Integrating Sphere Photodiode Model List：

For detailed specifications or to place an order directly, please visit our PLC Optoelectronics store：Laser Power Meter