| abstract |
(57) [Problem] In a high-density recording system in which fine recording pits smaller than an optical beam must be formed, a short-wavelength laser of 430 nm or less such as a blue-violet laser is used for recording and reproducing on an organic recording film. Provided is a recording medium that suppresses photoreaction and photodeterioration, improves reliability, and enables high-quality, high-density recording. SOLUTION: A recording layer having at least an organic dye as a main component is provided on a support substrate, and the organic dye has a first maximum value of absorption at a wavelength λ1 of 400 nm or less in an absorption spectrum thereof, and It has a second maximum value of absorption on a longer wavelength side than the λ1 and further has a refractive index (n) and absorption of the organic dye on a descending slope on a longer wavelength side of an absorption band including the first maximum value. An optical recording medium characterized in that there is a wavelength band whose coefficient (k) satisfies the following relationship: n ≧ 1.900.03 ≦ k ≦ 0.30. |