- Instrument Introduction
This experiment investigates the characteristic parameters of a Gaussian beam, as well as the transmission and transformation properties of a Gaussian beam passing through a thin lens, with a focus on the evaluation and measurement of beam quality. A spot measurement system was established using a CCD as the spot detector, integrated with a computer and measurement software. The intensity distribution of the He-Ne laser beam was measured, the parameters of the Gaussian beam were calculated, and the quality factor was determined using hyperbolic fitting. The optical path of the entire system is simple: a 2D CCD is used as the detection system, and the attenuated laser beam is directed directly onto the CCD. Consequently, the size and shape of the image captured by the CCD correspond to the size and shape of the incident laser beam’s cross-section (as represented by pixel size). The images undergo necessary processing, primarily image smoothing and grayscale calibration. Subsequently, the calibrated digital image signals are selected for analysis and calculation to determine the relevant parameters of the laser beam. This experiment involves knowledge of optics, mechanics, and electronics, making it highly suitable for experimental teaching in optical engineering programs, as well as for general-purpose spot measurement applications.
- Product Features
· 1. This experiment is part of the laser principles series and aligns with the needs of optoelectronic information laboratory development.
· 2. The experimental system features a streamlined design for easier operation.
· 3. It utilizes an industrial CCD camera imported from Germany, offering higher sensitivity and a wider dynamic range.
· 4. Includes a software development kit (SDK) to facilitate customers in developing new experiments based on the CCD camera.
- Experiment Content
1. Measurement of Gaussian beam parameters: spot diameter, divergence angle, waist radius, and energy distribution graph.
2. Transformation and parameter measurement of Gaussian beams.