The external cavity quantum cascade laser with this design may operate very stable due to its low dependences on voltage and temperature, he says.

“应用这种设计的外腔式量子级联激光器能够非常稳定地运行，这得益于对电压和温度的弱依赖关系，”他说。

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"The external cavity quantum cascade laser with this design may operate very stable due to its low dependences on voltage and temperature," he says.

“应用这种设计的外腔式量子级联激光器能够非常稳定地运行，这得益于对电压和温度的弱依赖关系，”他说。

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Another use of laser detection is for telling temperature.

激光探测的另外一个用处是用来测量温度。

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To record over an existing recording, the amorphous spots are reheated by the recording laser to a temperature that allows them to recrystallise.

ECONOMIST: Digital video discs

In their latest experiment, Dr Sullivan and his colleagues painted the blades of a rotor with both temperature-and pressure-sensing paints, shone laser light on to them, and mapped out the temperatures and pressures as the blades whirred around as fast as 14, 000 rotations per minute.

ECONOMIST: Pressure paints

The polymers return to a pre-defined shape when heated to a certain temperature, and, when damage is detected, an infrared laser sends light through the network to the damaged area, triggers the shape-memory, and commands the area to repair the crack or tear -- regaining up to 96 percent of its original strength.

ENGADGET: Shape-memory polymer knows when it's hurt, fixes itself