Device and method for mode modulation of terahertz quantum cascade laser device

The invention provides a device and a method for mode modulation of a terahertz quantum cascade laser device. The device at least comprises a microwave generator, a coupler, a T-shaped bias Tee, the terahertz quantum cascade laser device, a frequency spectrograph and an infrared spectrometer, wherei...

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Bibliographic Details
Main Authors ZHU YONGHAO, CAO JUNCHENG, LI HUA
Format Patent
LanguageChinese
English
Published 11.05.2016
Subjects
BASIC ELECTRIC ELEMENTS
DEVICES USING STIMULATED EMISSION
ELECTRICITY
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Summary:The invention provides a device and a method for mode modulation of a terahertz quantum cascade laser device. The device at least comprises a microwave generator, a coupler, a T-shaped bias Tee, the terahertz quantum cascade laser device, a frequency spectrograph and an infrared spectrometer, wherein the microwave generator is connected with an input end of the terahertz quantum cascade laser device sequentially through the coupler and the T-shaped bias Tee, the infrared spectrometer is connected with an output end of the terahertz quantum cascade laser device, and the terahertz quantum cascade laser device is connected with the coupler. Through the device, the terahertz quantum cascade laser device which works in a single mode and has a driving current close to a threshold current realizes microwave injection, adding one mode to the left side, multiple modes simultaneously to the two sides and one mode to the right side can be realized for an original work frequency through changing the injection frequency o
Bibliography:Application Number: CN20161120665