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Quantum Cascade Laser Operates at Room Temperature

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Researchers from Thales Corporate Research in Orsay, France, have developed a GaAs-based quantum cascade laser that operates at room temperature. Since their development in 1995, quantum cascade lasers have found applications in gas sensing and infrared spectroscopy.

GaAs-based devices had been limited to operation at cryogenic temperatures, but the Thales group found that epi-side-down mounting improved thermal dissipation. The new 11.5-µm lasers, which were thermoelectrically cooled, produced an average power of 2.2 mW at 240 K and displayed lasing at temperatures up to 287 K.

The team presented the results of its studies in May at CLEO 2001 in Baltimore.
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Published: June 2001
Research & TechnologyTech PulseLasers

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