- 옵틱스 | Optics > Dielectric Coated Optics
HR Right Angle Retroreflectors
Wavelength : 190 - 3000 nm
Dimensions L x H : 10 x 10 - 100 x 100 mm
Surface quality, S-D : 20-10; 40-20*
Surface flatness, P-V :
Refelctance : >99.8 %
LIDT : >20J/cm^2@1064nm, 10ns, 10Hz
< *depending on material and size >
The main application for HR right-angle retroreflectors (RR) is for ultrashort pulse back-reflection. Prisms or corner cube retroreflectors introduce considerable group delay dispersion, while HR right-angle retroreflectors have controlled GDD coatings. Such retroreflectors are popular among laser source manufacturers.
Dielectric and metallic coatings can be applied on flat mirrors glued into HR right- angle retroreflectors. A custom design provides the opportunity to create such products as low-loss retroreflectors, broadband low-GDD retroreflectors, wide-acceptance-angle retroreflectors and even retroreflectors that work as wavelength separators.
Over more than 20 years, Altechna has gathered experience in manufacturing custom retroreflectors. All the main coating technologies, including e-beam + IAD, IBS and magnetron sputtering, can be applied in the RR manufacturing process. The assembly process of HR right-angle retroreflectors allows controlling the right angle to be controlled well during the gluing procedure. The standard right-angle accuracy is <30 arcsec, and <10 arcsec can be achieved upon request.
Another application for retroreflectors was demonstrated in 1962, during the Lunar Laser Ranging experiment. Researchers succeeded in observing laser pulses reflected from a retroreflector array left on the surface of the Moon by those involved in the Apollo 11 mission.
Please challenge us with a custom-designed retroreflector for your laser system.