Abstract

This Perspective summarizes the status of technological development for large-area and low-noise substrate-transferred GaAs/AlGaAs crystalline coatings for interferometric gravitational-wave detectors, covering historical development, optical and mechanical loss performance, large-diameter mirror scaling, cryogenic noise processes, and experimental testbeds for future implementations.

Abstract

This Perspective summarizes the status of technological development for large-area and low-noise substrate-transferred GaAs/AlGaAs crystalline coatings for interferometric gravitational-wave detectors, covering historical development, optical and mechanical loss performance, large-diameter mirror scaling, cryogenic noise processes, and experimental testbeds for future implementations.

Abstract

This Perspective summarizes the status of technological development for large-area and low-noise substrate-transferred GaAs/AlGaAs crystalline coatings for interferometric gravitational-wave detectors, covering historical development, optical and mechanical loss performance, large-diameter mirror scaling, cryogenic noise processes, and experimental testbeds for future implementations.

Abstract

This Perspective summarizes the status of technological development for large-area and low-noise substrate-transferred GaAs/AlGaAs crystalline coatings for interferometric gravitational-wave detectors, covering historical development, optical and mechanical loss performance, large-diameter mirror scaling, cryogenic noise processes, and experimental testbeds for future implementations.