Number-Density Measurements of CO2 in Real Time with an Optical Frequency Comb for High Accuracy and Precision

2018 ◽  
Vol 9 (5) ◽  
Author(s):  
Sarah K. Scholten ◽  
Christopher Perrella ◽  
James D. Anstie ◽  
Richard T. White ◽  
Waddah Al-Ashwal ◽  
...  
Keyword(s):  
Real Time ◽  
Frequency Comb ◽  
High Accuracy ◽  
Optical Frequency Comb ◽  
Optical Frequency ◽  
Number Density ◽  
Density Measurements ◽  
Accuracy And Precision

scholarly journals High-accuracy absolute distance measurement with a mode-resolved optical frequency comb

2016 ◽  
Author(s):  
Dirk Voigt ◽  
Steven A. van den Berg ◽  
Adam Lešundák ◽  
Sjoerd van Eldik ◽  
Nandini Bhattacharya
Keyword(s):  
Frequency Comb ◽  
High Accuracy ◽  
Distance Measurement ◽  
Optical Frequency Comb ◽  
Optical Frequency ◽  
Absolute Distance

scholarly journals Real-time frequency-encoded spatiotemporal focusing through scattering media using a programmable 2D ultrafine optical frequency comb

2020 ◽  
Vol 6 (8) ◽  
pp. eaay1192 ◽  
Author(s):  
Xiaoming Wei ◽  
Yuecheng Shen ◽  
Joseph C. Jing ◽  
Ashton S. Hemphill ◽  
Changsheng Yang ◽  
...  
Keyword(s):  
Real Time ◽  
Frequency Comb ◽  
Optical Frequency Comb ◽  
Optical Frequency ◽  
Single Shot ◽  
Scattering Media ◽  
Wave Source ◽  
Time Frequency ◽  
Temporal Focusing ◽  
Wavefront Shaping

Optical wavefront shaping is a powerful tool for controlling photons in strongly scattering media. Its speed, however, has been the bottleneck for in vivo applications. Moreover, unlike spatial focusing, temporal focusing from a continuous-wave source has rarely been exploited yet is highly desired for nonlinear photonics. Here, we present a novel real-time frequency-encoded spatiotemporal (FEST) focusing technology. FEST focusing uses a novel programmable two-dimensional optical frequency comb with an ultrafine linewidth to perform single-shot wavefront measurements, with a fast single-pixel detector. This technique enables simultaneous spatial and temporal focusing at microsecond scales through thick dynamic scattering media. This technology also enabled us to discover the large-scale temporal shift, a new phenomenon that, with the conventional spatial memory effect, establishes a space-time duality. FEST focusing opens a new avenue for high-speed wavefront shaping in the field of photonics.

scholarly journals Tunable mm-wave A-RoF transmission scheme employing an optical frequency comb and dual-stage active demultiplexer

2021 ◽  
pp. 1-1
Author(s):  
Prajwal D Lakshmijayasimha ◽  
Syed Tajammul Ahmad ◽  
Eamonn Martin ◽  
Anandarajah M Prince ◽  
Aleksandra Maria Kaszubowska-Anandarajah
Keyword(s):  
Frequency Comb ◽  
Optical Frequency Comb ◽  
Optical Frequency ◽  
Transmission Scheme ◽  
Dual Stage

scholarly journals Coherent control of acoustic phonons in a silica fiber using a multi-GHz optical frequency comb

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Mamoru Endo ◽  
Shota Kimura ◽  
Shuntaro Tani ◽  
Yohei Kobayashi
Keyword(s):  
Coherent Control ◽  
Continuous Wave ◽  
Frequency Comb ◽  
Effective Interaction ◽  
Interaction Strength ◽  
Single Mode ◽  
Optical Frequency Comb ◽  
Material Structure ◽  
Optical Frequency ◽  
Acoustic Phonons

AbstractMulti-gigahertz mechanical vibrations that stem from interactions between light fields and matter—known as acoustic phonons—have long been a subject of research. In recent years, specially designed functional devices have been developed to enhance the strength of the light-matter interactions because excitation of acoustic phonons using a continuous-wave laser alone is insufficient. However, the strength of the interaction cannot be controlled appropriately or instantly using these structurally-dependent enhancements. Here we show a technique to control the effective interaction strength that does not operate via the material structure in the spatial domain; instead, the method operates through the structure of the light in the time domain. The effective excitation and coherent control of acoustic phonons in a single-mode fiber using an optical frequency comb that is performed by tailoring the optical pulse train. This work represents an important step towards comb-matter interactions.

Optical-frequency-comb based ultrasound sensor

2017 ◽  
Author(s):  
Takeo Minamikawa ◽  
Takashi Ogura ◽  
Takashi Masuoka ◽  
Eiji Hase ◽  
Yoshiaki Nakajima ◽  
...  
Keyword(s):  
Frequency Comb ◽  
Optical Frequency Comb ◽  
Optical Frequency ◽  
Ultrasound Sensor
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