A recording material includes a dye-bonded polymer compound which contains a polymer compound to which a one-photon absorption dye is bonded, and a glass transition temperature of the recording material is higher than 200° C. An optical information recording medium includes a recording layer and an intermediate layer adjacent to the recording layer, and the recording layer contains the above-described recording material.

A linear polarizer may be formed a blue dichroic dye compound, having a maximum dichroic ratio Kd12 in an entire visible wavelength range, and a red dichroic dye compound, having a maximum dichroic ratio Kd16 in the entire visible wavelength range. The linear polarizer has a dichroic ratio Kd18 and a thickness of less than or equal to 2 micrometers. The linear polarizer may form an achromatic polarizer.

A linear polarizer may be formed a blue dichroic dye compound, having a maximum dichroic ratio Kd?12 in an entire visible wavelength range, and a red dichroic dye compound, having a maximum dichroic ratio Kd?16 in the entire visible wavelength range. The linear polarizer has a dichroic ratio Kd?18 and a thickness of less than or equal to 2 micrometers. The linear polarizer may form an achromatic polarizer.