Patent ID: 8305870

Claim:
An optical information recording method, comprising: emitting light having a wavelength λ 1 from a first light source with a pulse width of time tw 1 or more and power P 1 ; emitting light having a wavelength λ 2 from a second light source with a pulse width of time tw 2 , a repetition interval T, and power P 2 ; and performing information recording by simultaneously irradiating an identical part of a recording medium with the light from the first light source and the light from the second light source; wherein the wavelength λ 1 and the wavelength λ 2 satisfy λ 1 >500 nm>λ 2 and λ 0 which is expressed as 1/λ 1 +1/λ 2 =1/λ 0 satisfies a relationship of λ 0 <300 nm, and emission of the first light source and emission of the second light source satisfy relationships of tw 2 <tw 1 , T<tw 1 , and P 2 >P 1 .