A Broadband THz-TDS System Based on DSTMS Emitter and LTG InGaAs/InAlAs Photoconductive Antenna Detector

Zhang, Ying; Zhang, Xiaoling; Li, Shaoxian; Gu, Jianqiang; Li, Yanfeng; Tian, Zhen; Ouyang, Chunmei; He, Ming; Han, Jiaguang; Zhang, Weili

doi:10.1038/srep26949

Cited by 42 publications

(29 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In addition, the strongest THz phonon absorption peak at about 1 THz is in DSTMS only about half as that of DAST [72]. DSTMS has been employed by several research groups for THz photonics applications [72][73][74][75][76][77][78][79][80][81].…”

Section: Alternative Ionic Organic Nlo Crystalsmentioning

confidence: 99%

“…[93,112,120,130,143,147,[153][154][155][156][157][158][159]), and later extended to other organic crystals, such as DSTMS (see, e.g., Refs. [72,76,79,81,93,94,160,161]), OH1 (see, e.g., Refs. [85,93,94,[96][97][98]), HMQ-TMS (see, e.g., Refs.…”

Section: Thz Sources Based On Optical Rectificationmentioning

confidence: 99%

“…According to the THz science and technology roadmap prepared by Dhillon et al [1], one can expect that organic THz sources will enter other fields of applications similarly as THz systems based on photoconductive antennas or inorganic NLO crystals. Furthermore, the last experiments showed that organic NLO crystals in a combination with photoconductive antennas provide good performance suitable for various applications [79]. Due to the possibility to reach very high THz electric fields with organic NLO crystals, several demonstrations of fundamental THz nonlinear photonics have been possible (see Section 5.1) using these sources, especially interesting due to the possibility to control matter with THz beams.…”

Section: Applications Of Organic Thz Sourcesmentioning

confidence: 99%

See 2 more Smart Citations

Organic Crystals for THz Photonics

et al. 2019

View full text Add to dashboard Cite

Organic crystals with second-order optical nonlinearity feature very high and ultra-fast optical nonlinearities and are therefore attractive for various photonics applications. During the last decade, they have been found particularly attractive for terahertz (THz) photonics. This is mainly due to the very intense and ultra-broadband THz-wave generation possible with these crystals. We review recent progress and challenges in the development of organic crystalline materials for THz-wave generation and detection applications. We discuss their structure, intrinsic properties, and advantages compared to inorganic alternatives. The characteristic properties of the most widely employed organic crystals at present, such as DAST, DSTMS, OH1, HMQ-TMS, and BNA are analyzed and compared. We summarize the most important principles for THz-wave generation and detection, as well as organic THz-system configurations based on either difference-frequency generation or optical rectification. In addition, we give state-of-the-art examples of very intense and ultra-broadband THz systems that rely on organic crystals. Finally, we present some recent breakthrough demonstrations in nonlinear THz photonics enabled by very intense organic crystalline THz sources, as well as examples of THz spectroscopy and THz imaging using organic crystals as THz sources for various scientific and technological applications.

show abstract

Section: Alternative Ionic Organic Nlo Crystalsmentioning

confidence: 99%

Section: Thz Sources Based On Optical Rectificationmentioning

confidence: 99%

Section: Applications Of Organic Thz Sourcesmentioning

confidence: 99%

See 1 more Smart Citation

Organic Crystals for THz Photonics

et al. 2019

View full text Add to dashboard Cite

show abstract

“…OR ensures the THz broadband generation through NLO centrosymmetric crystals [70][71][72], extended from 0.1 THz and beyond 40 THz [57,79,80], such as organic NLO crystals. 4-N,N-dimethylamino -4'-N'-methyl -stilbazolium 2,4,6-trimethylbenzenesulfonate (DSTMS) [81][82][83][84] and 4-N,N-dimethylamino-4'-N'-methyl-stilbazolium tosylate (DAST) show efficient generation from 0.3 to >16 THz in the phase-matching condition between 720 nm and 1650 nm. The NLO materials need to have high second-order NLO susceptibility, high transparency at both pump and THz frequency, and high optical damage threshold, in order to satisfy the phase-matching condition between the fundamental optical pump and generated THz waves [85,86].…”

Section: Generation and Detection Of Thz Pulsed Radiationmentioning

confidence: 99%

THz Pulsed Imaging in Biomedical Applications

et al. 2020

View full text Add to dashboard Cite

Recent advances in technology have allowed the production and the coherent detection of sub-ps pulses of terahertz (THz) radiation. Therefore, the potentialities of this technique have been readily recognized for THz spectroscopy and imaging in biomedicine. In particular, THz pulsed imaging (TPI) has rapidly increased its applications in the last decade. In this paper, we present a short review of TPI, discussing its basic principles and performances, and its state-of-the-art applications on biomedical systems.

show abstract

“…In terms of tunable spectral responses, there has also been a great deal of work. Such work has been motivated by applications in communications, for which there is a desire to transmit in lowloss communication bands, such as the 0.8-0.9 THz band [8], [9], and in spectroscopy, for which there is a desire to preferentially excite molecular absorption lines, such as the known 1.36 and 1.82 THz lines for lactose [20]. The THz techniques needed to enable tunable spectral responses have not developed to the extent of the techniques seen for high emission powers, but there is now a greater focus on establishing the underlying techniques needed to control THz frequency responses.…”

mentioning

confidence: 99%

Spectral Response Tuning of Photoconductive Terahertz Emitters With Binary Phase Masks

Collier

Stirling

Dekock-Kruger

et al. 2017

IEEE J. Select. Topics Quantum Electron.

View full text Add to dashboard Cite

In this work, binary phase masks are designed and implemented for use with a photoconductive terahertz (THz) emitter in order to shape the frequency response of the emitted THz waveforms. Theoretical and experimental results are applied to study the system. The theoretical results are presented in the form of both numerical simulations (to characterize and uniquely identify the underlying time-delayed photogeneration and resulting charge-carrier dynamics) and a simplified model (to conceptualize the system). The theoretical and experimental results are found to agree. It is ultimately shown that the phase delay through the binary phase mask can be used to preferentially allocate power into bands within the THz spectrum. Such results can lay the groundwork for future studies needing precise control of power within the THz spectrum. Index Terms-frequency response, optical beams, photoconductivity, terahertz radiation. I. INTRODUCTION VER the past decades, ultrafast pulsed lasers have enabled numerous advances in pure and applied studiesmany of which rely upon the effective emission and detection of terahertz (THz) radiation [1], [2]. This THz radiation, spanning 0.1-10 THz, has traditionally been difficult to emit and detect [3]-[6], due to the low photon energy, but the advent of sub-picosecond pulse durations with modern ultrafast pulsed lasers has enabled access to the THz spectrum. We now see THz radiation applied to communications, given its high carrier frequencies [7]-[9], biomedical imaging, given its low (and typically safer) photon energies [10], [11], and spectroscopy, given its extreme sensitivity to molecular absorption lines [12], [13].

show abstract

A Broadband THz-TDS System Based on DSTMS Emitter and LTG InGaAs/InAlAs Photoconductive Antenna Detector

Cited by 42 publications

References 43 publications

Organic Crystals for THz Photonics

Organic Crystals for THz Photonics

THz Pulsed Imaging in Biomedical Applications

Spectral Response Tuning of Photoconductive Terahertz Emitters With Binary Phase Masks

Contact Info

Product

Resources

About