Are rotating wedges a feasible alternative to dual mirrors for scanning and tracking LDV?

2015-12-04T14:09:45Z (GMT) by Steve Rothberg Mario Tirabassi
An LDV scanning head is proposed based on a pair of rotating optical wedges. Modelling demonstrates how the wedges can be configured to scan point-by-point, in a line and in a circle. The circular scan is considered for the tracking application and shown to offer certain advantages over alternative systems based on dual mirrors and a Dove prism in terms of lower apparent velocities at key rotation orders.