AXT announces volume production of edge-emitter, VCSEL lasers

April 27, 2001
Apr. 27, 2001--The VCSEL/Laser Diode Technologies Division of AXT, Inc. announced volume production of Edge-Emitter and VCSEL lasers designed for high data-rate telecommunication applications.

The VCSEL/Laser Diode Technologies Division of AXT, Inc. (Nasdaq: AXTI, a supplier of standard and customized VCSEL and edge-emitter lasers for telecom and data communications applications, announced volume production of 1,310 nm Fabry-Perot Edge-Emitter lasers designed for high data-rate telecommunication applications such as Gigabit Ethernet, short-reach SONET, and other optical transceiver and data link applications.

The lasers are available immediately in production volumes, epi and processed wafers, as well as in bare die and TO-56 packaged forms, with both ball lens and flat window. 1,310 nm EE lasers have operating powers up to 10mW at 85 degrees C in a stable single mode. The packaged lasers have typical threshold currents of 9 mA and have slope efficiencies in excess of 0.42 Watts/Amp. Operating currents for the packaged part are typically 22 mA.

In addition, AXT announced volume production of oxide confined VCSEL (vertical-cavity surface-emitting laser) devices designed for higher data-rate fiber optic transmission. Applications for this product include VSR Ethernet, fibre channel for storage area networks (SANs), optical interconnections and other optical transceiver applications.

The 850 nm devices have been successfully modulated at data-rates in excess of 3.125 Gbps with typical power output of 1.0mW and peak power output exceeding 5.5mW. The oxide VCSELs are highly efficient, with output slope efficiencies of 0.45-0.50 Watt/Amp obtained. Devices are available immediately in production volumes, and can be tailored to meet a variety of customer specific product designs.

About AXT, Inc.:

AXT designs, develops, manufactures and markets high-performance compound semiconductor substrates for the fiber optics and communications industries. For more information, visit

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