scholarly journals A decade-spanning high-resolution asynchronous optical sampling terahertz time-domain and frequency comb spectrometer

2015 ◽  
Vol 86 (10) ◽  
pp. 103107 ◽  
Author(s):  
Jacob T. Good ◽  
Daniel B. Holland ◽  
Ian A. Finneran ◽  
P. Brandon Carroll ◽  
Matthew J. Kelley ◽  
...  
2006 ◽  
Vol 88 (24) ◽  
pp. 241104 ◽  
Author(s):  
Takeshi Yasui ◽  
Yasuhiro Kabetani ◽  
Eisuke Saneyoshi ◽  
Shuko Yokoyama ◽  
Tsutomu Araki

2020 ◽  
Vol 45 (21) ◽  
pp. 6082
Author(s):  
Tobias Schweizer ◽  
Bruno G. Nicolau ◽  
Priscila Cavassin ◽  
Thomas Feurer ◽  
Natalie Banerji ◽  
...  

2020 ◽  
Author(s):  
Bingxin Xu ◽  
Xinyu Fan ◽  
Shuai Wang ◽  
Zuyuan He

Abstract Optical frequency comb with evenly spaced lines over a broad bandwidth has revolutionized the fields of optical metrology and spectroscopy. Here, we propose an electro-optic dual-comb spectroscopy to real-time interleave the spectrum with high resolution, in which two electro-optic frequency combs are seed by swept light source. An interleaved spectrum with a high resolution is real-time recorded by the sweeping probe comb without gap time, which is multi-heterodyne detected by the sweeping local comb. The proposed scheme measures a spectrum spanning 304 GHz in 1.6 ms with a resolution of 1 MHz, and reaches a spectral sampling rate of 1.9*108 points/s under Nyquist-limitation. A reflectance spectrum is measured with a calculated figure-of-merit of 4.2*108, which shows great prospect for fast and high-resolution applications.


Author(s):  
Thomas Udem

A laser frequency comb allows the phase coherent conversion of the very rapid oscillations of visible light of some 100s of THz down to frequencies that can be handled with conventional electronics. This capability has enabled the most precise laser spectroscopy experiments yet, which have allowed the testing of quantum electrodynamics, to determine fundamental constants and to construct an optical atomic clock. The chapter reviews the development of the frequency comb, derives its properties, and discusses its application for high resolution spectroscopy of atomic hydrogen.


2016 ◽  
Vol 36 (6) ◽  
pp. 0614001 ◽  
Author(s):  
吴元杰 Wu Yuanjie ◽  
叶慧琪 Ye Huiqi ◽  
韩建 Han Jian ◽  
邹璞 Zou Pu ◽  
傅凌统 Fu Lingtong ◽  
...  

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