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Laser platform promises diffraction-limited beam quality

Posted: 10 May 2007 ?? ?Print Version ?Bookmark and Share

Keywords:laser diode platform? diffraction limited beam? DBR lasers?

Photodigm Inc. has joined the global laser market with a proprietary semiconductor diode laser technology platform that is said to deliver new efficiency and diffraction-limited beam quality advantages over conventional laser solutions.

Photodigm's advanced diode laser process technology provides a single-frequency beam at power levels that up until now could only be achieved with a diode-pumped solid-state laser (DPSS), such as an Nd:YAG laser, according to the company. The laser design and process technology combines the attributes of high power, diffraction-limited beam quality, low astigmatism and single-frequency operation in one high-power diode laser. The company said this will enable new lower-cost, higher-efficiency products in sectors such as digital imaging, defense and free space communications.

The new platform is based on a proprietary Distributed Bragg Reflector (DBR) ridge waveguide process. The quantum-well epitaxial design enables power in excess of 500mW, with wall plug efficiencies up to 50 percent, while maintaining single-frequency operation. The DBR lasers provide the optical performance of a DPSS laser without the efficiency penalty of the DPSS laser's quantum defect, said Photodigm. Moreover, unlike a DPSS laser, they can be produced at wavelengths throughout the semiconductor material spectral range.

The company is exhibiting the semiconductor diode laser platform and products at the CLEO trade show, Baltimore, Maryland in the U.S. this week.

Evaluation units of the device are available today in specific wavelengths ranging between 920nm and 1100nm.

- Gina Roos

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