CPC G01N 21/3581 (2013.01) [G01N 21/01 (2013.01); H01S 5/042 (2013.01); H01S 5/3402 (2013.01); G01N 2021/0112 (2013.01); G01N 2021/396 (2013.01); G01N 2201/06113 (2013.01)] | 9 Claims |
1. A terahertz spectrum measurement system, comprising:
two terahertz quantum cascade lasers with their emission ports arranged oppositely;
a vacuum hood, which is arranged between emission ports of two terahertz quantum cascade laser devices;
radio frequency sources, each of which is connected said terahertz quantum cascade laser to provide a high-frequency RF signal for said terahertz quantum cascade laser;
DC sources, each of which is connected to said terahertz quantum cascade laser to provide a DC bias for said terahertz quantum cascade laser; and
T-type bias tees, each of which is arranged among said RF source, said DC source and said terahertz quantum cascade laser for injecting said high-frequency RF signal and said DC bias into aid terahertz quantum cascade laser;
wherein numbers of said RF sources, said DC sources and said T-type bias tees are each two, and each terahertz quantum cascade laser is correspondingly connected with a T-type bias tee, and RF source and a DC source.
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