Novel diode structure boosts laser efficiency

Photonic Products, the UK optoelectronics device manufacturer and laser diode specialist, is delighted to announce the launch of a new high visibility, short wavelength laser diode from Sanyo, rated to 50C, which offers a very high optical output power of 40mW CW with a low threshold current of 60mA in a 9mm package.

The DL-LS1158 638nm laser diode is part of a new range of laser diodes being developed by Sanyo with a new diode structure that results in a greatly improved beam circularity ratio of 2:1, compared with the previous beam circularity ratio of 4:1.

The improved beam circularity results in greater efficiency and consequently significant cost savings for OEMs and, combined with the high optical output power and high visibility, makes it an ideal laser diode for use as a light source in laser displays, laser levellers and line markers, barcode scanners, machine vision and medical and dental imaging applications.

Supplied in a 9mm package, the Sanyo DL-LS1158 laser diode has a high output power of 40mW CW at a visible wavelength of 638nm, a low threshold current of 60mA, low operating voltage of 2.4V, typical operating current of 100mA, a differential efficiency of 1.0mW/mA, monitoring output current of 0.4mA and an operating temperature range of -10 to +50C.

It requires a negative (N type) power supply system.

The Sanyo DL-LS1158 laser diode is Pb-free in compliance with the RoHS Directive.