Wavelength calibration methods in laser wavelength measurement

Area of Science:

• Optics and Photonics
• Spectroscopy
• Laser Technology

Background:

• Accurate wavelength calibration is essential for precise laser spectrum measurements.
• Existing methods lack specific designs for laser spectral calibration.
• Pulse laser wavelength calibration requires dedicated techniques.

Purpose of the Study:

• To establish a novel mathematical model for pulse laser wavelength calibration.
• To design a flat-field concave grating for near-infrared spectral analysis.
• To propose a wavelength calibration model utilizing concave grating spectroscopy.

Main Methods:

• Development of a mathematical model for pulse laser wavelength calibration.
• Design of a near-infrared flat-field concave grating based on dispersion aberration analysis.
• Implementation of a calibration algorithm using cubic spline interpolation and kernel regression for spectral data adjustment.

Main Results:

• A novel wavelength calibration model based on concave grating spectroscopy was developed.
• The proposed method achieves accurate wavelength determination through spectral data compensation and interpolation.
• Experimental verification confirms the effectiveness and performance of the calibration method.

Conclusions:

• The developed mathematical model and spectroscopy-based method provide accurate pulse laser wavelength calibration.
• The technique offers a specialized solution for laser spectral calibration challenges.
• Further analysis includes the uncertainty assessment of the measurement process.