40mW Operation Of InGaalP Visible-light Laser Diodes

High power, 600nm wavelength range, InGaAlP visible-light laser diodes are key components for optical data storage systems. 30mW class visible­ light lasers for high density recording have been reported by several researchers. Higher power is desired for higher speed recording and larger allowances on pick-up head design. In this paper, we report on stable 40mW operation of InGaAlP laser diodes at 50°C, for the first time.