A newly designed single etalon double edge Doppler wind lidar receiving optical system

Area of Science:

• Atmospheric optics
• Remote sensing technologies
• Lidar instrumentation

Background:

• Doppler lidar systems are crucial for atmospheric research, particularly for wind velocity measurements.
• Existing lidar receiving systems face limitations in sensitivity and complexity.
• Incoherent scattering light measurements require sophisticated optical filtering techniques.

Purpose of the Study:

• To propose and test a new optical Doppler lidar receiving system.
• To enhance the sensitivity of incoherent Doppler lidar for measuring Doppler-shifted light.
• To enable more accurate wind velocity measurements using lidar technology.

Main Methods:

• Development of a novel optical receiving system using a single etalon and polarization beam splitter.
• Guiding scattered light into the etalon at two different incident angles.
• Precise adjustment of incident angles using beam splitters and mirrors.
• Measurement of Doppler-shifted incoherent scattering light.

Main Results:

• The proposed system functions effectively, similar to two edge filters but with a single etalon.
• The system demonstrates high sensitivity in measuring moving targets.
• Theoretical calculations indicate superior optical sensitivity compared to single-edge systems.

Conclusions:

• The new optical Doppler lidar receiving system offers improved performance for atmospheric measurements.
• This technology holds significant potential for advancing wind velocity measurements.
• The system's design provides a more sensitive and potentially simpler approach to incoherent Doppler lidar.