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Abstract

An optical recording method for recording mark length-modulated information on a recording medium by using a plurality of recording mark lengths. The optical recording method comprises the steps of:

when a time length of one recording mark is denoted nT (T is a reference clock period equal to or less than 25 ns, and n is a natural number equal to or more than 2), (i) dividing the time length of the recording mark nT intoη1T, α1T, β1T, α2T, β2T, . . . , αiT, βiT, . . . , αmT, βmT, η2T in that order (m is a pulse division number; Σi(αi+βi)+η1+η2=n; αi (1≦i≦m) is a real number >0; βi (1≦i≦m−1) is a real number>0; βm is a real number ≧0; and η1 is a real number of −2≦η1≦2 and η2 is a real number of −2≦η2≦2);radiating recording light with a recording power Pwi in a time duration of αiT (1≦i≦m), and radiating recording light with a bias power Pbi in a time duration of βiT (1≦i≦m), the bias power being Pbi
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First Claim