This paper presents an optical head design that minimizes the component number and miniaturizes the head dimension by using a novel reflective prism-type holographic optical element (PT-HOE) for the next-generation high-density bluelight system with small form factor (SFF). The PT-HOE combines four functions, serving as a folding mirror, a beamsplitter, an aberration correction element, and a servo-signal generation device, which are generally required for a conventional optical pickup head (OPH). It greatly simplifies the system complication and assembly procedure of an OPH. Simulations give the satisfactory results and show the feasibility for realizing a high-density SFF OPH with a simple and compact configuration.

Date Published: 24 January 2008
PDF: 6 pages
Proc. SPIE 6827, Quantum Optics, Optical Data Storage, and Advanced Microlithography, 682716 (24 January 2008); doi: 10.1117/12.758181

Published in SPIE Proceedings Vol. 6827:
Quantum Optics, Optical Data Storage, and Advanced Microlithography
Chris A. Mack; Guangcan Guo; Guofan Jin; Song-hao Liu; Kees A. Schouhamer Immink; Jinfeng Kang; Jun-en Yao; Keiji Shono; Osamu Hirota, Editor(s)