OPHIR 774257A 激光功率传感器。

用途：用于精确测量激光功率，广泛应用于科研、工业加工、医疗等涉及激光使用的领域，能实时监测激光输出功率稳定性。

技术原理：基于热电堆原理，当激光功率作用于热电堆传感器圆盘中心，热量径向流动，在圆盘上形成温度梯度。热电堆的双金属结因温度差产生电压，该电压与输入功率成正比，通过测量此电压来计算激光功率。

性能：具备高测量精度，测量误差控制在极小范围。可测功率范围适配常见激光功率输出，能满足不同应用场景需求。对不同尺寸和位置的激光束响应稳定，在其有效探测区域内，光束位置和大小变化对测量结果影响微小，保证测量准确性与一致性。

Product Name: OPHIR 774257A Laser Power Sensor.

Purpose: It is used to accurately measure laser power and is widely applied in fields involving laser use such as scientific research, industrial processing, and medical treatment, enabling real - time monitoring of the stability of laser output power.

Technical Principle: Based on the thermopile principle, when laser power acts on the center of the thermopile sensor disc, heat flows radially, creating a temperature gradient on the disc. The bimetallic junctions of the thermopile generate a voltage due to the temperature difference, and this voltage is proportional to the input power. The laser power is calculated by measuring this voltage.

Performance: It has high measurement accuracy with measurement errors controlled within a very small range. The measurable power range is suitable for common laser power outputs, meeting the needs of different application scenarios. It has a stable response to laser beams of different sizes and positions. Within its effective detection area, changes in beam position and size have little impact on the measurement results, ensuring measurement accuracy and consistency.