Real-time spectral interleaved electro-optic dual-comb spectroscopy

2020 ◽  
Author(s):  
Bingxin Xu ◽  
Xinyu Fan ◽  
Shuai Wang ◽  
Zuyuan He
Keyword(s):  
High Resolution ◽  
Real Time ◽  
Figure Of Merit ◽  
Frequency Comb ◽  
Sampling Rate ◽  
Optical Metrology ◽  
Broad Bandwidth ◽  
Frequency Combs ◽  
Electro Optic ◽  
Spectral Sampling

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.

Frequency combs and precision spectroscopy of atomic hydrogen

2019 ◽  
pp. 142-215
Author(s):  
Thomas Udem
Keyword(s):  
High Resolution ◽  
Visible Light ◽  
Laser Spectroscopy ◽  
Quantum Electrodynamics ◽  
Atomic Hydrogen ◽  
Frequency Comb ◽  
Atomic Clock ◽  
Laser Frequency ◽  
High Resolution Spectroscopy ◽  
Frequency Combs

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.

scholarly journals High-Resolution Optical Thickness Measurement Based on Electro-Optic Dual-Optical Frequency Comb Sources

2017 ◽  
Vol 23 (2) ◽  
pp. 140-146 ◽  
Author(s):  
Oscar E. Bonilla-Manrique ◽  
Pedro Martin-Mateos ◽  
Borja Jerez ◽  
Marta Ruiz-Llata ◽  
Pablo Acedo
Keyword(s):  
High Resolution ◽  
Optical Thickness ◽  
Frequency Comb ◽  
Thickness Measurement ◽  
Optical Frequency Comb ◽  
Optical Frequency ◽  
Electro Optic

scholarly journals Real-Time Dynamic Atomic Spectroscopy Using Electro-Optic Frequency Combs

2016 ◽  
Vol 6 (4) ◽  
Author(s):  
Nicolas Bourbeau Hébert ◽  
Vincent Michaud-Belleau ◽  
Christopher Perrella ◽  
Gar-Wing Truong ◽  
James D. Anstie ◽  
...  
Keyword(s):  
Real Time ◽  
Atomic Spectroscopy ◽  
Time Dynamic ◽  
Frequency Combs ◽  
Electro Optic

Development of a Non-Contact Precision Measurement Technique Using Optical Frequency Combs

2012 ◽  
Vol 523-524 ◽  
pp. 877-882 ◽  
Author(s):  
Taro Onoe ◽  
Satoru Takahashi ◽  
Kiyoshi Takamasu ◽  
Hirokazu Matsumoto
Keyword(s):  
High Resolution ◽  
Frequency Comb ◽  
High Sensitivity ◽  
Distance Measurement ◽  
New Method ◽  
Optical Frequency ◽  
Optical Frequency Combs ◽  
High Frequencies ◽  
Frequency Combs ◽  
Lock In

We develop a new method for high-resolution and contactless distance measurement based on self frequency beats of optical frequency combs. We use two optical frequency comb lasers with Rb-stabilized repetition frequencies for doing accurate distance measurement. The repetition frequencies of the optical frequency combs are different, thus parts of the high frequencies such as several gigahertz of self beats are beat-downed to several megahertz without an RF frequency oscillator. The phases of the beat signals of several megahertz frequencies are measured by a lock-in amplifier with a high resolution and high sensitivity. The new method is applied to distance measurement for objects which have rough-surface in the distance range of several-meters.

scholarly journals Broadband high-resolution molecular spectroscopy with interleaved mid-infrared frequency combs

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
A. V. Muraviev ◽  
D. Konnov ◽  
K. L. Vodopyanov
Keyword(s):  
High Resolution ◽  
Molecular Spectroscopy ◽  
Frequency Comb ◽  
Acquisition Time ◽  
Sampling Point ◽  
Dual Frequency ◽  
Mid Infrared ◽  
Frequency Combs ◽  
Spectral Bands ◽  
Primary Frequency

Abstract Traditionally, there has been a trade-off in spectroscopic measurements between high resolution, broadband coverage, and acquisition time. Originally envisioned for precision spectroscopy of the hydrogen atom in the ultraviolet, optical frequency combs are now commonly used for probing molecular ro-vibrational transitions throughout broad spectral bands in the mid-infrared providing superior resolution, speed, and the capability of referencing to the primary frequency standards. Here we demonstrate the acquisition of 2.5 million spectral data points over the continuous wavelength range of 3.17–5.13 µm (frequency span 1200 cm−1, sampling point spacing 13–21 MHz), via interleaving comb-tooth-resolved spectra acquired with a highly-coherent broadband dual-frequency-comb system based on optical subharmonic generation. With the original comb-line spacing of 115 MHz, overlaying eight spectra with gradually shifted comb lines we fully resolve the amplitude and phase spectra of molecules with narrow Doppler lines, such as carbon disulfide (CS2) and its three isotopologues.

scholarly journals On Frequency Combs in Monolithic Resonators

Nanophotonics ◽  
2016 ◽  
Vol 5 (2) ◽  
pp. 363-391 ◽  
Author(s):  
A. A. Savchenkov ◽  
A. B. Matsko ◽  
L. Maleki
Keyword(s):  
Frequency Comb ◽  
Microring Resonator ◽  
Optical Metrology ◽  
Optical Frequency ◽  
Optical Frequency Combs ◽  
Frequency Combs ◽  
Pulse Generators ◽  
Similarities And Differences ◽  
Microwave Sources ◽  
Physical Phenomena

AbstractOptical frequency combs have become indispensable in astronomical measurements, biological fingerprinting, optical metrology, and radio frequency photonic signal generation. Recently demonstrated microring resonator-based Kerr frequency combs point the way towards chip scale optical frequency comb generator retaining major properties of the lab scale devices. This technique is promising for integrated miniature radiofrequency and microwave sources, atomic clocks, optical references and femtosecond pulse generators. Here we present Kerr frequency comb development in a historical perspective emphasizing its similarities and differences with other physical phenomena. We elucidate fundamental principles and describe practical implementations of Kerr comb oscillators, highlighting associated solved and unsolved problems.

scholarly journals Dual-comb spectroscopy with spectral acquisition rate surpassing Nyquist-limited trade-off constraint

2020 ◽  
Author(s):  
Bingxin Xu ◽  
Xinyu Fan ◽  
Shuai Wang ◽  
Zuyuan He
Keyword(s):  
Spectral Resolution ◽  
Frequency Comb ◽  
Signal To Noise Ratio ◽  
Sampling Rate ◽  
High Sensitivity ◽  
Acquisition Rate ◽  
Trade Off ◽  
Frequency Combs ◽  
Rate Improvement ◽  
Significant Performance

Abstract Optical frequency comb with evenly spaced lines over a broad bandwidth has revolutionized the fields of optical metrology and spectroscopy. Despite dual-comb spectroscopy (DCS) offers a superb overall performance on spectral resolution, measurement bandwidth and refresh rate, these parameters are still constrained by the Nyquist-limited trade-off. Here, we propose a novel DCS system to overcome this limitation with tens of spectral acquisition rate improvement, which is built with two electro-optic frequency combs seeded by an ultralinearly swept light source. The proposed scheme records a spectrum spanning 304 GHz with a spectral resolution of 10 kHz in 1.6 ms, which achieves a spectral sampling-rate of 1.9×1010 points/s. We also demonstrate the 100-averaged results with 28.9 dB signal-to-noise ratio for high sensitivity measurement. The demonstration shows great prospect for precise measurement with significant performance breakthrough.

scholarly journals Robust Optical Frequency Comb Generation by Using a Three-Stage Optical Nonlinear Dynamic

2021 ◽  
Vol 9 ◽  
Author(s):  
Yali Zhang ◽  
Shuxu Liao ◽  
Guan Wang ◽  
Ke Yang ◽  
Zhiyao Zhang ◽  
...  
Keyword(s):  
Frequency Comb ◽  
Phase Relationship ◽  
Optical Injection ◽  
Optical Frequency ◽  
Wave Mixing ◽  
Optical Frequency Combs ◽  
Frequency Combs ◽  
Electro Optic ◽  
Comb Generation ◽  
5 Ghz

In this article, we propose and investigate a novel scheme to generate optical frequency combs (OFCs) by using a three-stage generator, which is based on optical injection–induced dynamics cascaded by subharmonic electro-optic modulation and the four-wave mixing (FWM) effect. A primary seed OFC is rooted from the nonlinear dynamics in the optically injected semiconductor laser, and its performance is improved using a two-stage booster based on subharmonic electro-optic modulation and the FWM effect. The comb spacing can be easily tuned by adjusting that of the primary seed OFC or through electro-optic modulation by the use of subharmonics with different orders. Moreover, it becomes stabilized because the phase relationship between the comb teeth can be fixed in the process of subharmonic electro-optic modulation. Its optical spectrum continues to be broadened in the following FWM process. Finally, robust OFCs with a comb spacing of 4 GHz and a comb teeth number of 23 and a comb spacing of 5 GHz and a comb teeth number of 21 are experimentally demonstrated.

Sign in / Sign up

Export Citation Format

Share Document