Related Experiment Video
Updated: Oct 14, 2026
The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
Published on: August 12, 2013
Design of a tilted-transmissive-plate-based point-ahead-angle unit with ultra-low tilt-to-length coupling noise for
Abstract:
A tilted-transmissive-plate-based point-ahead angle unit (PAAU) is proposed for spaceborne laser interferometry to achieve ultra-low tilt-to-length (TTL) coupling noise under TianQin mission requirements. An analytical model is developed incorporating angular jitter, parasitic motion, and geometric misalignment through lever-arm, piston, beam-offset, and transmissive-medium effects, enabling identification of key influencing factors. A sensitivity-guided tolerance-allocation method is applied to derive component-level requirements. Monte Carlo simulations demonstrate a total TTL coupling noise of 6.21×10-14m/Hz1/2 in the 0.1 mHz-1 Hz band, meeting the allocated budget. Compared with representative existing designs, the proposed PAAU relaxes critical tolerances by mitigating first-order translational coupling, providing improved feasibility for high-precision intersatellite interferometry.
More Related Videos
08:39Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
Published on: January 28, 2019
08:32Design and Building of a Customizable, Single-Objective, Light-Sheet Fluorescence Microscope for the Visualization of Cytoskeleton Networks
Published on: January 26, 2024