Frequency doubling and tripling of terahertz radiation in a GaAs/AlAs superlattice due to frequency modulation of Bloch oscillations

2000 ◽  
Vol 77 (9) ◽  
pp. 1259-1261 ◽  
Author(s):  
S. Winnerl ◽  
E. Schomburg ◽  
S. Brandl ◽  
O. Kus ◽  
K. F. Renk ◽  
...  
Keyword(s):  
Terahertz Radiation ◽  
Frequency Modulation ◽  
Frequency Doubling ◽  
Bloch Oscillations

scholarly journals Semiconductor-Superlattice Parametric Oscillator as a Subterahertz and Possible Terahertz Radiation Source

2007 ◽  
Vol 2007 ◽  
pp. 1-9 ◽  
Author(s):  
Karl F. Renk ◽  
Andreas Rogl ◽  
Benjamin I. Stahl ◽  
Matthias Muthmann ◽  
Helmut Appel ◽  
...  
Keyword(s):  
Terahertz Radiation ◽  
Radiation Source ◽  
Microwave Field ◽  
Parametric Oscillator ◽  
Bloch Oscillations ◽  
Microwave Source ◽  
Conduction Electrons ◽  
Semiconductor Superlattice

We describe the operation of a semiconductor-superlattice parametric oscillator (SPO) at a subterahertz frequency (near 300 GHz). The oscillator is driven by a microwave source (frequency near 100 GHz). We also present an analysis indicating that operation at frequencies above 1 THz should be possible. The SPO is based on the ability of conduction electrons in a superlattice to perform Bloch oscillations. Broadband tunability as well as the monochromacy of a driving microwave field are transferred to the SPO.

scholarly journals Получение второй гармоники излучения субтерагерцовых гиротронов при удвоении частоты в InP : Fe и ее использование для магнитоспектроскопии полупроводниковых структур

2019 ◽  
Vol 53 (9) ◽  
pp. 1244
Author(s):  
В.В. Румянцев ◽  
К.В. Маремьянин ◽  
А.П. Фокин ◽  
А.А. Дубинов ◽  
В.В. Уточкин ◽  
...  
Keyword(s):  
Indium Phosphide ◽  
Terahertz Radiation ◽  
Second Harmonic ◽  
Frequency Doubling ◽  
Second Order ◽  
Semiconductor Structures ◽  
Harmonic Radiation ◽  
Radiation Sources ◽  
Second Harmonic Radiation ◽  
New Generation

AbstractThe possibility of obtaining intense terahertz radiation due to second-order lattice nonlinearity in indium-phosphide crystals doped with iron is discussed. As a source of radiation, subterahertz gyrotrons are considered. It is shown that the efficiency of frequency doubling can reach 3%, which opens up the possibility for developing a new generation of terahertz radiation sources. The possibility of applying second-harmonic radiation for the magnetospectroscopy of semiconductor structures with quasi-Dirac dispersion is demonstrated.

Composite right/left-handed transmission line with array of thermocouples for generating terahertz radiation

2020 ◽  
Vol 92 (2) ◽  
pp. 20502
Author(s):  
Behrokh Beiranvand ◽  
Alexander S. Sobolev ◽  
Anton V. Kudryashov
Keyword(s):  
Transmission Line ◽  
Terahertz Radiation ◽  
Transmission Lines ◽  
Software Package ◽  
Optical Pulses ◽  
Capacitively Coupled ◽  
Voltage Difference ◽  
Left Handed ◽  
Microwave Transmission ◽  
Commercial Software Package

We present a new concept of the thermoelectric structure that generates microwave and terahertz signals when illuminated by femtosecond optical pulses. The structure consists of a series array of capacitively coupled thermocouples. The array acts as a hybrid type microwave transmission line with anomalous dispersion and phase velocity higher than the velocity of light. This allows for adding up the responces from all the thermocouples in phase. The array is easily integrable with microstrip transmission lines. Dispersion curves obtained from both the lumped network scheme and numerical simulations are presented. The connection of the thermocouples is a composite right/left-handed transmission line, which can receive terahertz radiation from the transmission line ports. The radiation of the photon to the surface of the thermocouple structure causes a voltage difference with the bandwidth of terahertz. We examined a lossy composite right/left-handed transmission line to extract the circuit elements. The calculated properties of the design are extracted by employing commercial software package CST STUDIO SUITE.

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