NEAR-FIELD LIGHT GENERATING ELEMENT, METHOD FOR MANUFACTURING NEAR-FIELD LIGHT GENERATING ELEMENT, NEAR-FIELD OPTICAL HEAD, METHOD FOR MANUFACTURING NEAR-FIELD OPTICAL HEAD, AND INFORMATION RECORD REPRODUCER

摘要

PROBLEM TO BE SOLVED: To provide a near-field light generating element capable of reducing a spot size of near-field light after securing a light quantity; and to provide a method for manufacturing the near-field light generating element, a near-field optical head, a method for manufacturing the near-field optical head, and an information record reproducer.;SOLUTION: A core 23 includes a first core 54, and a second core 55 covering the side face of the first core 54, and is formed into a polygonal shape when viewed from the Z direction. A metal film 51 is disposed on the side face 23g of the core 23 when viewed from the Z direction, and the width W1 of an interface of the metal film 51 and the core 23 is formed narrower than the width S3 of the side face 23g of the core 23.;COPYRIGHT: (C)2012,JPO&INPIT