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SemiNex Unveils Family Of 1450 To 1550nm LDs

The 4-Watt fiber-coupled Laser Diodes (LDs) are high-powered and low-cost and suited to medical and military applications

SemiNex Corporation has revealed its 4-Pin Fiber-Coupled Diode Laser, which is most notable for its high slope efficiency, high power, small packaging and high volume availability.

Wavelengths of 1450nm, 1470nm, 1532nm and 1550nm, which are considered eye-safe, come as standard. These are particularly suited for use in the aerospace, communications, LIDAR (Light Detection and Ranging), military and medical industries.

The firm can also provide the 4-Pin Fiber-Coupled DL in customized wavelengths between 1300nm and 1700nm.



SemiNex offers up to 5W CW optical power in a single emitter fiber-coupled package. Available in 4-pin and High-Heat-Load (HHL) versions, both packages offer a back-facet photodiode monitor and 105µm/125µm 0.22 NA optical fiber.

The standard 4-pin package’s high slope efficiency of 50% W/A lowers the typical electrical and cooling system requirements, enabling designers to engineer smaller laser systems at reduced costs.

“Lasers are revolutionizing the industries we have come to depend upon. In the medical industry, lasers are making surgery less invasive and are providing alternatives to the painful cosmetic modifications that are so prevalent in our society," said SemiNex President, David Bean.

“It will be interesting to see what new solutions appear in the near future," added John Callahan, SemiNex’s Head of Development, “The advent of these inexpensive and powerful lasers has enabled innovations from the military involving long-range artillery targeting and broader use of lasers in medical applications."

The 4-pin fiber-coupled laser can also be purchased in modular form with three to seven diodes in one package. The module can provide up to 25 watts of power with a conversion efficiency of 30% watts/amp. The diodes’ outputs are combined into a fiber bundle equipped with a 650 nm aiming beam. Other infrared wavelengths in the 1300nm to 1600nm range are also available.
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