Apparatus and method for recording mark

A recording apparatus to record a mark on a recording medium, comprising:

• an aberration detecting part, including a spherical aberration detecting part and a coma aberration detecting part, which detects an aberration signal corresponding to an amount of an aberration contained in a light beam radiated onto a recording surface of the recording medium, using an optical pickup system including a light source that emits the light beam having an optical power to record the mark on the recording medium and an objective lens that condenses the light beam to focus the light beam as an optical spot on the recording surface of the recording medium;
• and
• an optical power controller which controls the optical power output from the light source using the aberration signal, so as to have the light source output the optical power to record the mark, in which a deformation due to the aberration is compensated for, on the recording medium, wherein the optical power controller controls the optical power output from the light source so as to apply an optical power P2 within a range of ±20% of a power γ2P0 to record the mark, where the light source emits the light beam having a wavelength corresponding to a blue light, the numerical aperture of the objective lens is 0.85±0.05, a thickness of the recording medium is 0.1±0.05 mm, and a spherical aberration corresponding to a coefficient W40 of more than 0.15 occurs, and
• the power γ2P0 is obtained by multiplying a recording power P0 of the light source, in which the aberration does not occur, by a compensation coefficient γ2 which satisfies the relationship:
• γ2=4×W40+0.6.

A recording apparatus to record a mark on a recording medium, comprising:

• an aberration detecting part, including a spherical aberration detecting part and a coma aberration detecting part, which detects an aberration signal corresponding to an amount of an aberration contained in a light beam radiated onto a recording surface of the recording medium, using an optical pickup system including a light source that emits the light beam having an optical power to record the mark on the recording medium and an objective lens that condenses the light beam to focus the light beam as an optical spot on the recording surface of the recording medium;
• and
• an optical power controller which controls the optical power output from the light source using the aberration signal, so as to have the light source output the optical power to record the mark, in which a deformation due to the aberration is compensated for, on the recording medium,
• wherein the optical power controller controls the optical power output from the light source so as to apply an optical power P3 within a range of 20% of a power γ3P0 to record the mark, where the light source emits the light beam having a wavelength corresponding to a blue light, the numerical aperture of the objective lens is 0.85±0.05, a thickness of the recording medium is 0.1±0.05 mm, and a coma aberration corresponding to a coefficient W31 of less than 0.15 occurs, and
• the power γ3P0 is obtained by multiplying a recording power P0 of the light source, in which the aberration does not occur, by a compensation coefficient γ3 which satisfies the relationship:
• γ3=1.5×W31+0.94.

A recording apparatus to record a mark on a recording medium, comprising:

• an aberration detecting part, including a spherical aberration detecting part and a coma aberration detecting part, which detects an aberration signal corresponding to an amount of an aberration contained in a light beam radiated onto a recording surface of the recording medium, using an optical pickup system including a light source that emits the light beam having an optical power to record the mark on the recording medium and an objective lens that condenses the light beam to focus the light beam as an optical spot on the recording surface of the recording medium;
• and
• an optical power controller which controls the optical power output from the light source using the aberration signal, so as to have the light source output the optical power to record the mark, in which a deformation due to the aberration is compensated for, on the recording medium, wherein the optical power controller controls the optical power output from the light source so as to apply an optical power P4, within a range of ±20% of a power γ4P0 to record the mark, where the light source emits the light beam having a wavelength corresponding to a blue light, the numerical aperture of the objective lens is 0.85±0.05, a thickness of the recording medium is 0.1±0.05 mm, and a coma aberration corresponding to a coefficient W31 of more than 0.15 occurs, and
• the power γ4P0 is obtained by multiplying a recording power P0 of the light source, in which the aberration does not occur, by a compensation coefficient γ4 which satisfies the relationship:
• γ4=3.1×W31+0.7.

A method of recording a mark on a recording medium, the method comprising:

• detecting an aberration signal corresponding to an amount of an aberration contained in a light beam radiated onto a recording surface of the recording medium using an optical pickup system including a light source that emits a light beam having an optical power to record the mark on the recording medium and an objective lens that condenses the light beam to focus the light beam as an optical spot on the recording surface of the recording medium;
• controlling the optical power output from the light source using the aberration signal, so as to have the light source output the optical power to record the mark, in which a deformation due to the aberration is compensated for, on the recording medium;
• and
• recording the mark in which the deformation due to the aberration is compensated for using the light beam having the controlled optical power output from the light source, wherein the controlling of the optical power includes controlling the light source to apply an optical power P1 within a range of ±20% of a power γ1P0 to record the mark, where the light source emits the light beam having a wavelength corresponding to a blue light, the numerical aperture of the objective lens is 0.85±0.05, a thickness of the recording medium is 0.1±0.05 mm, and a spherical aberration corresponding to a coefficient W40 of less than 0.15 occurs, and
• the power γ1P0 is obtained by multiplying a recording power P0 of the light source, in which the aberration does not occur, by a compensation coefficient γ1 which satisfies the relationship:
• γ1=1.9×W40+0.91.

A method of recording a mark on a recording medium, the method comprising:

• detecting an aberration signal corresponding to an amount of an aberration contained in a light beam radiated onto a recording surface of the recording medium using an optical pickup system including a light source that emits a light beam having an optical power to record the mark on the recording medium and an objective lens that condenses the light beam to focus the light beam as an optical spot on the recording surface of the recording medium;
• controlling the optical power output from the light source using the aberration signal, so as to have the light source output the optical power to record the mark, in which a deformation due to the aberration is compensated for, on the recording medium;
• and
• recording the mark in which the deformation due to the aberration is compensated for using the light beam having the controlled optical power output from the light source,
• wherein the controlling of the optical power includes controlling the light source to apply an optical power P2 within a range of ±20% of a power γ2P0 to record the mark, where the light source emits the light beam having a wavelength corresponding to a blue light, the numerical aperture of the objective lens is 0.85±0.05, a thickness of the recording medium is 0.1±0.05 mm, and a spherical aberration corresponding to a coefficient W40 of more than 0.15 occurs, and
• the power γ2 P0 is obtained by multiplying a recording power P0 of the light source, in which aberration does not occur, by a compensation coefficient γ2 which satisfies the relationship:
• γ2=4×0.6.

A method of recording a mark on a recording medium, the method comprising:

• detecting an aberration signal corresponding to an amount of an aberration contained in a light beam radiated onto a recording surface of the recording medium using an optical pickup system including a light source that emits a light beam having an optical power to record the mark on the recording medium and an objective lens that condenses the light beam to focus the light beam as an optical spot on the recording surface of the recording medium;
• controlling the optical power output from the light source using the aberration signal, so as to have the light source output the optical power to record the mark, in which a deformation due to the aberration is compensated for, on the recording medium;
• and
• recording the mark in which the deformation due to the aberration is compensated for using the light beam having the controlled optical power output from the light source wherein the controlling of the optical power includes controlling the light source to apply an optical power P3 within a range of ±20% of a power γ3P0 to record the mark, where the light source emits the light beam having a wavelength corresponding to a blue light, the numerical aperture of the objective lens is 0.85±0.05, a thickness of the recording medium is 0.1±0.05mm, and a coma aberration corresponding to a coefficient W31 of less than 0.15 occurs, and the power γ3P0 is obtained by multiplying a recording power P0 of the light source, in which aberration does not occur, by a compensation coefficient γ3 which satisfies the relationship:
• γ3=1.5×W31+0.94.

A method of recording a mark on a recording medium, the method comprising:

• detecting an aberration signal corresponding to an amount of an aberration contained in a light beam radiated onto a recording surface of the recording medium using an optical pickup system including a light source that emits a light beam having an optical power to record the mark on the recording medium and an objective lens that condenses the light beam to focus the light beam as an optical spot on the recording surface of the recording medium;
• controlling the optical power output from the light source using the aberration signal, so as to have the light source output the optical power to record the mark, in which a deformation due to the aberration is compensated for, on the recording medium;
• and
• recording the mark in which the deformation due to the aberration is compensated for using the light beam having the controlled optical power output from the light source
• wherein the controlling of the optical power includes controlling the light source to apply an optical power P4 within a range of ±20% of a power γ4P0 to record the mark, where the light source emits the light beam having a wavelength corresponding to a blue light, the numerical aperture of the objective lens is 0.85±0.05, a thickness of the recording medium is 0.1±0.05 mm, and a coma aberration corresponding to a coefficient W31 of more than 0.15 occurs, and
• the power γ4P0 is obtained by multiplying a recording power P0 of the light source, in which aberration does not occur, by a compensation coefficient γ4 which satisfies the relationship:
• γ4=3.1×W31+0.7.