ELECTROMAGNETIC WAVE RADIATION ELEMENT, AND METHOD FOR PRODUCING SAME

WIPO Patent Application WO/2012/124829

A1

This electromagnetic wave radiation element emits an electromagnetic wave having a target frequency within the range of 0.1 THz to 30 THz to the outside of a crystal. Said element is provided with a main body (7) formed from a non-linear optical crystal, and a sub wavelength grating structure (5) formed on the surface of the main body (7). The sub wavelength grating structure (5) comprises columnar bodies (6) regularly arranged on the surface (7a) of the main body (7). Each columnar body (6) is provided with a constant width part (6d) having a constant width, and a base part (6g) disposed extending from the surface toward the constant width part (6d). A surface (6b) of the base part (6g) has an arc shape, the center of curvature of which is outside of the base part (6g) when viewed from a transverse section formed by cutting the columnar body along an arrangement direction (X, Y).

WO/2005/085947	LASER LIGHT SOURCE DEVICE, EXPOSURE APPARATUS USING THIS LASER LIGHT SOURCE DEVICE, AND MASK EXAMINING DEVICE
JPH05100266	OPTICAL HIGHER HARMONICS GENERATING ELEMENT
JPH05323404	OPTICAL WAVELENGTH CONVERSION ELEMENT

KONDO JUNGO (JP)
IWATA YUICHI (JP)
EJIRI TETSUYA (JP)

PCT/JP2012/057661

September 20, 2012

March 16, 2012

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NGK INSULATORS LTD (JP)
KONDO JUNGO (JP)
IWATA YUICHI (JP)
EJIRI TETSUYA (JP)

G02F1/37; G02F1/39

JPH09146131A	1997-06-06
JP2005215638A	2005-08-11
JP2009175385A	2009-08-06
JP2003177263A	2003-06-27

HOSODA, Masutoshi et al. (JP)
Masunori Hosoda (JP)

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