What are the advantages of fused silica materials?
High light transmission: suitable for UV to NIR wavelength.
Low coefficient of thermal expansion: good temperature stability for harsh environments.
Corrosion/radiation resistance: suitable for space or high energy physics experiments.

What is the structure of a retroreflector? How does it work?
Retroreflectors consist of three high precision perpendicular reflecting surfaces (usually right angled) shaped to resemble a corner of a cube.
The material can be optical glass (fused silica, BK7), metal (aluminum), or plastic (for low cost applications). The retroreflectors processed by Yutai Optics are made of optical glass material.
They are usually coated with a reflective coating (silver, aluminum, gold) to improve reflective efficiency.

What are the optical properties of retroreflectors?
Incident light is reflected back parallel to the direction of incidence (with a slight offset, but in the opposite direction), regardless of the direction of entry, as long as it enters the effective aperture.
Alignment independent: unlike conventional plano mirrors, retroreflectors are highly tolerant of incident angles and require no precision adjustment.
Phase conjugate reflection: maintains the wavefront characteristics of the beam (suitable for interferometry).

Widely used in laser ranging, satellite ranging, interferometer.

What are the applications of fused silica retroreflectors?
Fused silica retroreflectors applicable scenarios:
UV laser systems (DUV lithography, excimer lasers).
Satellite laser ranging (radiation resistant, low thermal expansion).
High power laser reflection (CO₂ lasers, femtosecond lasers).
Extreme environments (space, deep ocean, nuclear facilities).