To further improve the performance of cavity-enhanced spectroscopy systems, a high-quality U-cavity system was established. In process experiment, an asymmetric ripple effect, which is different from previous etalon found, seriously affects spectral system. This unique phenomenon mainly manifests in amplitudes fluctuations curves measured by folding mirror and end Based on multi-beam interferen...

Abstract Fabry–Pérot etalons illuminated with collimated beams have been analytically characterized in detail since their invention. Meanwhile, most of the features located telecentric planes studied only numerically, despite wide use this configuration astrophysical instrumentation for decades. In work we present analytical expressions transmitted electric field and its derivatives that are va...

Fiber-fed etalons are widely employed in advanced interferometric instruments such as gravitational-wave detectors, ultrastable lasers and calibration reference for high-precision spectrographs. We demonstrate that variation near-field distribution of the feeding fiber would deteriorate spectrum precision fiber-fed Fabry-Perot etalon, especially when at order 3 * 10-10 or higher is required. Th...