TERRACE TYPE THIN-PLATE SUBSTRATE, MAKING METHOD OF TERRACE TYPE THIN-PLATE SUBSTRATE, PSEUDO PHASE MATCHING SECOND HARMONIC GENERATING DEVICE, HIGH-DENSITY RECORDING MEDIUM, LASER, OPTICAL MODULATOR, AND POLARIZATION INVERTING METHOD OF TERRACE TYPE THIN-PLATE SUBSTRATE

摘要

PROBLEM TO BE SOLVED: To make a thin-plate substrate whose both surfaces are usable in a short time at low cost.;SOLUTION: The terrace type thin-plate substrate 1 which has a non-processed section 2 having a first main surface 11 and a second main surface 12 and a cut section 3 having the first main surface 11 and a cut surface 13 by cutting a surface 31 having a surface perpendicular to a self-polarization direction as the first main surface 11 by using a dicer, is manufactured. The substrate 13 is installed so as to have the first main surface 11 in parallel to a diameter direction of an extremely thin peripheral cutting edge 32 of the dicer, which is pressed against a side surface of the substrate 31 to cut off a portion of the substrate 31. As the cutting-off operation, an operation to cut off a surface-layer portion including the second main surface 12 first by pressing the extremely thin peripheral cutting edge 32 against a side surface end on the side of the second main surface 12 and then to cut off a surface-layer portion including a cut surface L₁ formed as a result by pressing the extremely thin peripheral cutting edge 32 against a side surface end on the side of the cut surface L₁ is repeatedly performed to shorten the distance between the first main surface 11 and cut surface 13.;COPYRIGHT: (C)2009,JPO&INPIT