Method of producing a slab type two-dimensional photonic crystal structure

1. A method of producing a slab type two-dimensional photonic crystal structure comprising a slab of a dielectric single crystal and a lattice column comprising through holes; said method comprising the steps of:

forming recesses in a substrate of a dielectric single crystal by etching a first main face of said substrate of said dielectric single crystal;

forming a guard film on a portion of a first main face of a base body and a supporting film on the remainder of said first main face of said base body;

then joining said guard film and said supporting film on said base body to said first main face of said substrate through an adhesive layer; and

then forming a slab by grinding a second main face of said substrate so that said recesses pass through said slab to form said through holes.

2. The method of claim 1 , further comprising the step of filling a dielectric material into said through holes to form dielectric pillars.

3. The method of claim 1 , further comprising forming lattice columns in said slab of said dielectric single crystal by filling said recesses in said substrate with a dielectric material, said slab type two dimensional photonic crystal comprising said slab of said dielectric single crystal and said lattice columns.

4. The method of claim 3 , further comprising removing said supporting film from said first main face of said base body after forming said slab of said dielectric single crystal, said slab type two dimensional photonic crystal comprising said slab of said dielectric single crystal and said lattice columns having spaces under and over said slab of said dielectric single crystal.

5. The method of claim 1 , further comprising forming a metal layer on said first main face of said substrate, forming a resist on said metal layer, and etching said resist, said metal layer, and said first main face of said substrate to form said recesses on said first main face of said substrate.