INFORMATION RECORDING HEAD, INFORMATION RECORDING DEVICE, INFORMATION RECORDING METHOD, AND OPTICAL DEVICE

WIPO Patent Application WO/2012/008547

A1

In the present disclosures, a plasmon antenna (22) having a rotationally symmetrical opening (22A) having a shape that is roughly rotationally symmetrical around an axis in the direction of progress of recording light radiated at a nanometer size that is larger than bit carriers (15) on bit patterned media (10) is irradiated with femtosecond pulse laser light as the abovementioned recording light, and is excited by the femtosecond pulse laser light radiated as the abovementioned recording light at the abovementioned plasmon antenna (22), and by means of the interaction of the bit carrier (15) on the abovementioned bit patterned media (10) positioned facing the rotationally symmetrical opening (22A) of the abovementioned plasmon antenna (22) and the rotationally symmetrical opening (22A) of the abovementioned plasmon antenna (22), circularly polarized light is generated within the abovementioned bit carrier (15) and information is recorded by means of direct magnetization reversal.

NAKAGAWA KATSUJI (JP)
ASHIZAWA YOSHITO (JP)
OHNUKI SHINICHIRO (JP)
ITOH AKIYOSHI (JP)
TSUKAMOTO ARATA (JP)

PCT/JP2011/066148

January 19, 2012

July 14, 2011

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UNIV NIHON (JP)
NAKAGAWA KATSUJI (JP)
ASHIZAWA YOSHITO (JP)
OHNUKI SHINICHIRO (JP)
ITOH AKIYOSHI (JP)
TSUKAMOTO ARATA (JP)

G11B5/31; G11B5/02; G11B5/65

WO2008004535A1

2008-01-10

JP2005515578A	2005-05-26
JP2006351091A	2006-12-28
JP2009538490A	2009-11-05
JP2002279616A	2002-09-27
JP2003157502A	2003-05-30
JP2003008100A	2003-01-10
JP2009060057A	2009-03-19

KOIKE, Akira et al. (JP)
Akira Koike (JP)

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