New record operation temperature for quantum-cascade lasers

Monday, April 28, 2014 - 13:22 in Physics & Chemistry

For the observation of cold matter in the interstellar medium, astronomers need instruments for the detection of terahertz radiation. Specific high-resolution instruments are based on terahertz quantum-cascade lasers, but operate only at cryogenic temperatures. Physicists have now developed a terahertz quantum-cascade laser, which operates at significantly higher temperatures than previously achieved. The new development allows for the use of more compact cooling systems — also reducing the obstacles for many other applications.

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