PATTERN SHAPING METHOD HAVING PHASE TRANSITION

PATTERN SHAPING METHOD HAVING PHASE TRANSITION

The method comprises (a) causing the photoinduced anisotropy uniformly on a non-linear optical thin film (8) by exposing the thin film (8) to the light which is linearly polarized when the recording light source (9) passes through the polariscope (10), and (b) selectively forming a 90 -rotated light...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LEE, IL - HANG, KIM, HONG - MAN, KWAK, JONG - HUN, PARK, SO - YON
Format: Patent
Sprache:eng ; kor
Schlagworte:
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Beschreibung
Zusammenfassung:The method comprises (a) causing the photoinduced anisotropy uniformly on a non-linear optical thin film (8) by exposing the thin film (8) to the light which is linearly polarized when the recording light source (9) passes through the polariscope (10), and (b) selectively forming a 90 -rotated light axis with respect to the photoinduced light axis using a 90 polariscope (11) and a binary photomask (3). The method provides the real-time (0,π) phase shift for non-linear optical materials only by a containuous 2- step photolighography exposing process without several etching steps needed in the conventional method.