A recording method including: emitting laser light from an optical fiber array to record an image formed of writing units with moving a recording target and the optical fiber array relatively using a recording device including a plurality of laser light-emitting elements and an emitting unit including the optical fiber array, in which a plurality of optical fibers configured to guide laser light emitted from the laser light-emitting elements are aligned, wherein a maximum length of the writing unit along a sub-scanning direction is controlled with set values of: a duty ratio and a cycle of a pulse signal input to the emitting unit; recording energy applied to the recording target; and a spot diameter of the laser light, to record with overlapping an edge of the writing unit with an edge of the adjacent writing unit in the sub-scanning direction.

A system comprising: an actuator; a signal generator configured to apply an electric signal to the actuator to expand and contract the actuator; an optical fibre associated with the actuator, the optical fibre configured to lengthen when the actuator expands and shorten when the actuator contracts; a coherent light source configured to transmit a coherent light through the optical fibre to provide illumination during the lengthening and shortening of the optical fibre.

A system comprising: an actuator; a signal generator configured to apply an electric signal to the actuator to expand and contract the actuator; an optical fibre associated with the actuator, the optical fibre configured to lengthen when the actuator expands and shorten when the actuator contracts; a coherent light source configured to transmit a coherent light through the optical fibre to provide illumination during the lengthening and shortening of the optical fibre.