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Hollow Retroreflectors Promote Precision Optical Alignment

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Advances in work materials and coatings are pushing this self-compensating mirror technology beyond traditional uses, such as laser tracking, and further into space-based interferometry, long-path spectroscopy and other emerging applications.

Zvi Bleier, Itai Vishnia and Jack Lipkins, PLX Inc.

Precision optical alignment capability across a range from the UV to the far-IR and a lighter-weight design have long given hollow retroreflectors an advantage over their solid cousins (retroreflector prisms) in boresighting, laser tracking, rangefinding, diverse laboratory applications and even space-based spectrometers. Within the past decade or so, enhanced work material and coating selection have expanded their application base into areas such as military and space-based atmospheric monitoring. Solid or hollow, a retroflector is basically a self-compensating mirror that is completely...Read full article

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