UWB (ultra wide band) adjustable terahertz wave source system based on optical feedback modulation gain equalization

A terahertz wave source and gain equalization technology, which is applied in the field of optically generated terahertz waves, achieves the effects of high relative efficiency, stable frequency, and strong anti-electromagnetic interference ability

Inactive Publication Date: 2016-09-28
NANJING UNIV OF INFORMATION SCI & TECH
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Problems solved by technology

However, the current optical mixing terahertz wave radiation technology has not yet solved the continuously adjustable generation of terahertz waves covering the entire frequency range of 0.1-3THz. The generation of tones provides the possibility for the development and application of ultra-wideband terahertz generation systems

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  • UWB (ultra wide band) adjustable terahertz wave source system based on optical feedback modulation gain equalization

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Embodiment Construction

[0016] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0017] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0018] An ultra-broadband adjustable terahertz wave source system based on optical feedback modulation gain equalization, including an optical feedback modulation gain equalization unit, a longitudinal mode selection unit, a ring resonator unit, and a frequency mixing unit; the optical feedback modulation gain equalization unit and the longitudinal One end of the mode selection unit is connected, the other end of the longitudinal mode selection unit is connected with the ring resonator...

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Abstract

The invention discloses an ultra-broadband adjustable terahertz wave source system based on optical feedback modulation gain equalization, which includes an optical feedback modulation gain equalization unit, a longitudinal mode selection unit, a ring resonator unit and a frequency mixing unit; the optical feedback modulation gain The balance unit is connected to one end of the longitudinal mode selection unit, the other end of the longitudinal mode selection unit is connected to the ring resonator unit, the output end of the ring resonator unit is connected to the frequency mixing unit, and the input end of the ring resonator unit is also connected to the pump light source . The invention introduces the optical feedback technology into the optically generated terahertz wave system, which can realize the generation of terahertz waves with low phase noise, high performance, high efficiency, ultra-narrow line width, and ultra-wideband; the system development cost is low, the signal spectrum purity is high, The tunable range is large, and there is no need to introduce complex mechanisms such as spatial hole burning, polarization hole burning, and nonlinear effects into the system.

Description

technical field [0001] The invention belongs to the technical field of optically generated terahertz waves, and in particular relates to an ultra-broadband adjustable terahertz wave source system based on optical feedback modulation gain balance. Background technique [0002] Traditional continuous terahertz wave source generation technologies include electron beam generation technology, optically pumped far-infrared gas lasers, solid-state radiation sources, frequency doubling, terahertz semiconductor lasers, terahertz parametric oscillations, and optical mixing. Among them, light mixing to generate terahertz waves is an optical heterodyne configuration scheme, which uses two beams of light to excite photoconductive materials to generate a photogenerated current whose frequency is equal to the frequency difference between the two beams of light, that is, terahertz current. Coupling the generated terahertz current to the transmission line circuit or antenna structure can rad...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S1/02
CPCH01S1/02
Inventor 周俊萍辛彪葛益娴
Owner NANJING UNIV OF INFORMATION SCI & TECH
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