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Updated: Jun 8, 2026
12:14
The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
Published on: August 12, 2013
Target-plane intensity approximation for apertured Gaussian beams applied to heterodyne backscatter lidar systems
Applied Optics
|October 12, 2010
Summary
This study approximates Gaussian beam truncation effects for lidar systems. The findings improve calculations for heterodyne lidar return signals, enhancing system performance.
Area of Science:
- Optics and Photonics
- Electromagnetism
- Remote Sensing
Background:
- Gaussian beams are fundamental in optical systems, including lidar.
- Aperture truncation significantly affects beam propagation and intensity.
- Accurate modeling of truncated beams is crucial for lidar system performance.
Purpose of the Study:
- To investigate the effects of transmit-aperture truncation on Gaussian beams.
- To develop an approximation for the top-hat aperture-transmission function.
- To assess the accuracy and applicability of the developed approximation.
Main Methods:
- Employed the extended Huygens-Fresnel principle for beam propagation analysis.
- Derived an abstract Gaussian aperture-transmission function as an approximation.
- Determined fitting parameters by equating beam radius and on-axis intensity.
Main Results:
- Established bounds for the applicability of the derived approximation.
- Demonstrated the accuracy of the approximation through theoretical analysis.
- Validated the usefulness of the approximation in calculating heterodyne lidar return signals.
Conclusions:
- The developed approximation effectively models Gaussian beam truncation effects.
- This method enhances the accuracy of heterodyne lidar return signal calculations.
- The findings contribute to improved design and performance analysis of lidar systems.
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