An optical recording medium having a recording layer which contains at least one compound selected from the group consisting of mono-, di-, and triazaporphyrin compounds optionally in the form of a metal complex; or an optical recording medium comprising a substrate and formed thereon at least a recording layer containing an organic dye as a main component, characterized in that the organic dye has a first maximum value of absorption at a wavelength &lgr;
1
of 400 nm or less in the absorption spectrum and has a second maximum value of absorption at a longer-wavelength side than the &lgr;
1,
and a wavelength band wherein the refractive index (n) and the absorption coefficient (k) of the above organic dye satisfy n≧1.90 and 0.03≦k≦0.30.
一种光学记录介质,其记录层至少含有一种选自由
金属络合物形式的单氮杂
卟啉、二氮杂
卟啉和三氮杂
卟啉化合物组成的组中的化合物;或一种光学记录介质,包括基底和在其上形成的至少含有作为主要成分的有机
染料的记录层,其特征在于有机
染料在波长&lgr;
1
在吸收光谱中为 400 nm 或更小的波长处具有第一最大吸收值,在比 &lgr;
1,
和一个波长带,其中上述有机
染料的折射率(n)和吸收系数(k)满足 n≧1.90 和 0.03≦k≦0.30。