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Product category: Lasers
News Release from: Photonic Products | Subject: HL6343G, HL6344G, HL6347MG and HL6348MG
Edited by the Electronicstalk Editorial Team on 25 December 2002

Circular beam for red lasers

The latest additions to Hitachi's MARU Beam Series red laser diodes offer the world's first circular beam with a 1.2 (typical) aspect ratio for laser diodes in the 635nm wavelength band.

The latest additions to Hitachi's MARU Beam Series red laser diodes offer the world's first circular beam with a 1.2 (typical) aspect ratio for laser diodes in the 635nm wavelength band The latest diodes in this series are the HL6343G and HL6344G, which use a 9mm package with 10mW optical output and the HL6347MG and HL6348MG which use a 5.6mm package with a 10mW optical output

They are designed by self-aligned refractive index (SRI), active layer structure.

The change from the previous elliptical beam to a circular beam with a 1.2 (typical) aspect ratio makes it possible to simplify the beam forming optics required in products such as laser levellers and laser scanners, resulting in significant cost savings for OEMs.

The Gaussian intensity profile of the circular beam gives a sharper, brighter and thus more visible output beam ensuring their suitability as a light source for general alignment applications and optical measurement equipment.

At 35mA (typical) the operating current is approximately 30% lower than Hitachi's previous low operating current laser diodes, enabling the HL6343G, HL6344G, HL6347MG and HL6348MG to be used in the same environments as current Hitachi models while offering an extended battery life.

These Hitachi laser diodes have an optical output power of 10mW at a visible wavelength of 635nm, a low threshold current of 50mA, typical operating current of 35mA, low operating voltage of 2.4V, LD reverse voltage of 2V, PD reverse voltage of 30V, differential efficiency, of 0.8mW/mA and an operating temperature range of -10 to +50C. Request a free brochure from Photonic Products ...

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