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Step Beamsplitter for Laser Beams

IP.com Disclosure Number: IPCOM000060550D
Original Publication Date: 1986-Apr-01
Included in the Prior Art Database: 2005-Mar-08

Publishing Venue

IBM

Related People

Authors:
LoDato, VA [+details]

Abstract

This article describes a method for accurate beamsplitting for lasers which involves a step or multiple prism ground from a single piece of optical glass. Conventionally, a laser beam is folded within a small area through use of a series of mirrors and/or prisms. With this method it is difficult to achieve accurate positioning of a multiple from a single beam because of small misalignments of the mounts. The device is made from a single piece of material which acts to solve the misalignment problems. The multirhomboidal splitter described (Fig. 1) has the laser beam entering at the top 1. Lower diagonal surfaces 3 are coated to provide maximum reflection, while the upper diagonal surfaces 4 are partially coated to permit reflection 2 and transmittance 5 to occur on each surface.