Optical recording by a 823‐nm GaAlAs laser, based on stretched‐polymer birefringence relaxation | Zendy

Murthy Parvathi S. | Zendy; Klingensmith Kenneth A. | Zendy; Michl Josef | Zendy

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Optical recording by a 823‐nm GaAlAs laser, based on stretched‐polymer birefringence relaxation

Author(s) -

Murthy Parvathi S.,

Klingensmith Kenneth A.,

Michl Josef

Publication year - 1986

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.1986.070310730

Subject(s) - birefringence , materials science , optical storage , laser , optical recording , copolymer , polymer , vinyl chloride , relaxation (psychology) , optical microscope , optics , optoelectronics , scanning electron microscope , composite material , psychology , social psychology , physics

A ∼5‐μm‐thick stretched sheet of a vinyl chloride–vinyldene chloride copolymer containing a suitable polymethine dye providing an optical density of 1–2 at 823 nm has been used to record ∼3μm‐diameter relaxed spots, produced with pulses of 250 μs or longer from a 5‐mW GaAlAs laser operating at 823 nm. The spots have been observed under polarizing microscope. It is proposed that this demonstrates a principle that could be used for recording and retrieval of information by a laser beam, using a stretched polymer as the storage medium.

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