Conically scanned lidar telescope using holographic optical elements

Details Conically scanned lidar telescope using holographic optical elements Conically scanned lidar telescope using holographic optical elements

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992lara.conf..521s&link_type=abstract

In NASA. Langley Research Center, 16th International Laser Radar Conference, Part 2 p 521-524 (SEE N92-31013 21-35)

Physics

Conical Scanning, Holography, Optical Radar, Remote Sensing, Telescopes, Accumulators, Apertures, Dichroism, Field Of View, Laser Range Finders, Mirrors, Multiplexing, Receivers

Scientific paper

Holographic optical elements (HOE) using volume phase holograms make possible a new class of lightweight scanning telescopes having advantages for lidar remote sensing instruments. So far, the only application of HOE's to lidar has been a non-scanning receiver for a laser range finder. We introduce a large aperture, narrow field of view (FOV) telescope used in a conical scanning configuration, having a much smaller rotating mass than in conventional designs. Typically, lidars employ a large aperture collector and require a narrow FOV to limit the amount of skylight background. Focal plane techniques are not good approaches to scanning because they require a large FOV within which to scan a smaller FOV mirror or detector array. Thus, scanning lidar systems have either used a large flat scanning mirror at which the receiver telescope is pointed, or the entire telescope is steered. We present a concept for a conically scanned lidar telescope in which the only moving part is the HOE which serves as the primary collecting optic. We also describe methods by which a multiplexed HOE can be used simultaneously as a dichroic beamsplitter.

Affiliated with

Also associated with

No associations

Rating

Conically scanned lidar telescope using holographic optical elements does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Conically scanned lidar telescope using holographic optical elements, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Conically scanned lidar telescope using holographic optical elements will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1208881