| Product Introduction

PLI weak Absorption tester (Photothermal-Lensing Absorption MeasuringInstrument) is a weak Absorption test instrument designed based on the photothermal effect, which has high sensitivity to the weak Absorption characteristics of crystals, thin films and other materials. When the pump laser beam irradiates the sample, the thermal Lens effect occurs in the irradiated area of the sample, and the surface deformation and the internal Refractive Index gradient distribution change occur. Another beam of detection Laser passes through the same region of the sample, Photoelectric Detector detecting the change signal of the intensity of the detection light Transmission the sample. The signal is amplified and processed, and the absorption rate of the sample under the pump light irradiation is calculated. The PLI weak Absorption tester developed by us has a measurement accuracy of 1ppm, which can realize the functions of one-dimensional depth scanning, surface (film) Absorption and body (substrate) Absorption distinction measurement, time scanning, etc. The system supports custom multi-pump light source and two-dimensional Absorption distribution scanning function. The instrument provides key data support for Optics component performance optimization through high-precision measurement, and is suitable for scientific research institutes, Laser device production and other scenarios.

| Application areas

· optics, crystal material Absorption

· optics film Absorption

· surface defect analysis

· our products full process of independent production, can be customized according to customer needs, standard products refer to the following list:

| Typical Reference Indicators

| Typical package size diagram (mm)