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2007•Japanese Journal of Applied PhysicsOpen access

Hybrid Catadioptric System for Holographic and Disk Application

Yung-Sung Lan, Chung-Hao Tien

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Abstract

In this paper, we reveal a new device for use as an optical data storage system. The system is made up of Cassegrain-like structures. The volume (35 × 20 × 20 mm 3 ) of the system is the size of a pickup head used in conventional optical storage. It has compatibility with several conventional optical disk technologies. Namely, the system provides a platform for integration with compact disc (CD), digital versatile disc (DVD), Blu-ray disc (BD) and holographic systems. The full width half maximums (FWHMs) of the spot size for a CD have been measured in this system and are 0.98 and 0.95 µm in the tangential and radial directions, respectively.

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What this paper is about

In this paper, we reveal a new device for use as an optical data storage system. The system is made up of Cassegrain-like structures. The volume (35 × 20 × 20 mm 3 ) of the system is the size of a pickup head used in conventional optical storage. It has compatibility with several conventional optical disk technologies. Namely, the system provides a platform for integration with compact disc (CD), digital versatile disc (DVD), Blu-ray disc (BD) and holographic systems. The full width half maximums (FWHMs) of the spot size for a CD have been measured in this system and are 0.98 and 0.95 µm in the tangential and radial directions, respectively.

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Available abstract

In this paper, we reveal a new device for use as an optical data storage system. The system is made up of Cassegrain-like structures. The volume (35 × 20 × 20 mm 3 ) of the system is the size of a pickup head used in conventional optical storage. It has compatibility with several conventional optical disk technologies. Namely, the system provides a platform for integration with compact disc (CD), digital versatile disc (DVD), Blu-ray disc (BD) and holographic systems. The full width half maximums (FWHMs) of the spot size for a CD have been measured in this system and are 0.98 and 0.95 µm in the tangential and radial directions, respectively.

Key concepts: Catadioptric system, Optical disc, Holography, Compact disc, Optics, Pickup, Cassegrain reflector, Compatibility (geochemistry)

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