Evaluation and autoalignment method of the focusing unit for a near-field optical recording system

Hyoung Kil Yoon; DaeGab Gweon; Jun Hee Lee; Jaehwa Jeong; Hyeong-ryeol Oh; Sang Tae Lee

doi:10.1117/1.1788693

1 October 2004 Evaluation and autoalignment method of the focusing unit for a near-field optical recording system

Hyoung Kil Yoon; DaeGab Gweon; Jun Hee Lee; Jaehwa Jeong; Hyeong-ryeol Oh; Sang Tae Lee;

Author Affiliations +

Optical Engineering, 43(10), (2004). https://doi.org/10.1117/1.1788693

Abstract

Evaluation results and an autoalignment method for an optical head of a near-field recoding (NFR) system are presented. The focusing unit is an optical head of a NFR system and is composed of a solid immersion lens (SIL) and an objective lens (OL). Generally, the size of the focusing unit is smaller than that of the conventional optical recording head. Hence there are difficulties in assembling the small focusing unit precisely and a novel method for an effective assembly is required. We compose an evaluation system with an interferometer and evaluate some focusing unit samples aligned and assembled manually and present the obtained results. We also propose a conceptual method of autoalignment to assemble the focusing unit well by a pattern recognition using a neural network. Using the conventional optical tool, Code V, a tolerance analysis of the assembly error between the SIL and the objective lens and an interference pattern analysis for the assembly error are executed. Then, through an analysis of the simulation results, the autoalignment methodology using a neural network approach is proposed.

Citation Download Citation

Hyoung Kil Yoon, DaeGab Gweon, Jun Hee Lee, Jaehwa Jeong, Hyeong-ryeol Oh, Sang Tae Lee, "Evaluation and autoalignment method of the focusing unit for a near-field optical recording system," Optical Engineering 43(10), (1 October 2004). https://doi.org/10.1117/1.1788693 . Submission:

ACCESS THE FULL ARTICLE

PERSONAL SIGN IN
Full access may be available with your subscription

Email or Username Forgot your username?

Password Forgot your password?

Show

Remember Email/Username on this computer

Remember Password

No SPIE account? Create an account
or Institutional Sign In via Shibboleth

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $20.00

Non-members: $25.00 ADD TO CART

Show All Keywords

Keywords/Phrases

Search In:

Publication Years