Design of Compatible Optics for Solid-Immersion-Lens-Based Near-Field Recording System and Blu-ray Disc Using Relay Lens

作者：Choi Hyun^*; Kim Jong Pil; Yoon Yong Joong; Kim Wan Chin; Park No Cheol; Park Young Pil; Park Kyoung Su

来源：Japanese Journal of Applied Physics, 2009, 48(3): 03A041.

DOI：10.1143/JJAP.48.03A041

We designed compatible optics for a solid-immersion-lens (SIL)-based near-field recording (NFR) system and a Blu-ray disc (BD). The working distance, numerical aperture (NA), and cover layer thickness of the SIL-based NFR system differ from those of BD. Therefore, for the compatibility of a cover layer incident type NFR system of whose NA is 1.46 and BD, we use a relay lens that is composed of two low-NA lenses. The optical tolerances such as decenter, tilt, and SIL thickness tolerances are considered to ensure manufacturability. The decenter and tilt tolerances of each optical component are greater than 1.0 mu m and 0.1 degrees, respectively. The tolerance of the SIL thickness range is 14 mu m at the criterion of the wavefront aberration of 0.035 lambda(rms). We design the optical layout and simulate each focus error signal of BD and the SIL-based NFR system. From the practical design results, we confirm that the SIL-based NFR system can be compatible to BD with a simple relay lens.

• 出版日期2009-3