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Mid-IR Laser Diode Raises Operating Temperature

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Spectrometrists probing the midinfrared with semiconductor lasers have had to be content with the higher noise and spectral width of pulsed operation or else use cryogenic cooling to achieve continuous-wave (CW) operation. A quantum cascade device developed at Applied Optoelectronics Inc. in Sugar Land, Texas, has taken a step toward bridging this problem. The laser, centered at 5.2 µm, still required cooling to 210 K to achieve CW operation at 8 mW, but this is within the ability of less-expensive thermoelectric coolers. The company applied material advances and thermal...Read full article

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    Published: March 2001
    Research & Technologysemiconductor lasersTech PulseLasers

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