Thickness tolerance compensation of SIL first surface near-field recording with replicated lens on SIL

Yoon, Yong-Joong; Choi, Hye‐Yeon; Kim, Wan-Chin; Song, TaeSun; Park, No−Cheol

doi:10.1007/s00542-006-0353-2

Cited by 3 publications

(3 citation statements)

References 8 publications

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“…A replicated surface is commonly used for the fabrication of optical storage device lenses. 9) In general, the possible range of the replicated lens thicknesses for fabrication is from 50 to 200 mm. The designed replicated surface has a center thickness of 50 mm and periphery thickness of 63.9 mm.…”

Section: Design Of Compatible Opticsmentioning

confidence: 99%

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

Choi

Kim

Yoon

et al. 2009

jjap

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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 mm and 0.1 , respectively. The tolerance of the SIL thickness range is 14 mm at the criterion of the wavefront aberration of 0:035 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. #

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Section: Design Of Compatible Opticsmentioning

confidence: 99%

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

Choi

Kim

Yoon

et al. 2009

jjap

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“…To achieve these targets, it is essential to reduce the spherical aberration sensitivity for variations in SIL thickness. 8) Thus, we add an aspherical replicated lens to the SIL as shown in Fig. 2.…”

Section: Novel Sil Optical Head Designmentioning

confidence: 99%

Design and Analysis of Replicated Solid Immersion Lens for Large Thickness Tolerance in Near-Field Recording

Yoon

Kim

Choi

et al. 2008

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Recent development of testing QCD as the theory of strong interactions is reviewed. Emphasis is, put on the success of perturbative QCD and the determination of the fundamental scale parameter A• Recent development of h^avy quarkonium physics is also reviewed from the point of view of QCD and the possibility that future heavy quarkonium experiments can provide further quantitative QCD tests is discussed.

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“…Solid immersion lens fabrication has been difficult due to the small thickness tolerance required. To improve SIL fabrication with increasing thickness tolerance, hybrid SILs and ways of reducing the sensitivity to a spherical aberration in the SIL thickness have been researched (Yoon et al 2007(Yoon et al , 2008. Another important technology in NFR is the SIL optical head assembly.…”

Section: Introductionmentioning

confidence: 99%

Assembly and evaluation of a SIL optical head for cover-layered incident NFR without disk contact with the bottom surface of a SIL

et al. 2009

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In the assembly of the solid immersion lens (SIL) optical head for cover-layered incident near-field recordings (NFRs), disk contact with the bottom surface of the SIL has previously been regarded as essential. This is because SIL optical heads are designed to interface with a cover layer. However, SILs can be contaminated and damaged by this contact. We present a new SIL optical head assembly method for cover-layered incident NFRs without disk contact with the bottom surface of the SIL. To achieve this, we added zoom optics to a Twyman-Green interferometer in the measurement beam optical path. Our assembly method eliminates SIL contamination problems and the assembly procedure becomes simple because of removing the disk contact process. In addition, it is not necessary to consider the aberrations induced by disk tilt and cover-layer thickness variation. The SIL optical head assembled by the proposed method has good optical performance satisfying the optical tolerances and the measured wavefront aberration is good agreement with simulations.

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Thickness tolerance compensation of SIL first surface near-field recording with replicated lens on SIL

Cited by 3 publications

References 8 publications

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

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

Design and Analysis of Replicated Solid Immersion Lens for Large Thickness Tolerance in Near-Field Recording

Assembly and evaluation of a SIL optical head for cover-layered incident NFR without disk contact with the bottom surface of a SIL

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