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A 2D chiral microcavity based on apparent circular dichroism
April, 2024, Published in Nature Communications
We propose a novel approach to engineer asymmetric transmission between left-handed and right-handed circularly polarized light in planar Fabry–Pérot microcavities without requiring nanofabrication. By embedding organic thin films exhibiting apparent circular dichroism (ACD), based on 2D chirality, we achieve significant asymmetry in cavity mode transmission. Our method preserves low mode volumes and enables a range of chiral light-matter phenomena, with potential applications in spintronics, polaritonics, and chiral lasing.
Chen, TL., Salij, A., Parrish, K.A. et al. A 2D chiral microcavity based on apparent circular dichroism. Nat Commun 15, 3072 (2024).
Cavity-Enhanced Vernier SpectroscopY with a Chip-Scale Mid-Infrared Frequency Comb
(2022) Published on ACS Photonics (Journal cover)
Chip-scale optical frequency combs can provide broadband spectroscopy for diagnosing complex organic molecules. Here, we apply the Vernier technique to free-running operation of an interband cascade laser frequency comb in a simple linear geometry that performs cavity-enhanced chemical sensing.
Optically switched dual-wavelength cavity ring-down spectrometer for high-precision isotope ratio measurements of methane δd in the near infrared
(2021) Analytical Chemistry 93(16) 6375-6384
We report a spectrometer employing optically switched dual-wavelength cavity ring-down spectroscopy (OSDW-CRDS) for high-precision measurements of methane isotope ratios. A waveguide optical switch rapidly alternated between two wavelengths to detect absorption by two isotopologues using near-infrared CRDS.
Measuring the α-particle charge radius with muonic helium-4 ions
(2021) Nature 93(16) 6375-6384
The size of the helium nucleus has been determined using exotic helium atoms in which one electron has been replaced with its heavier cousin, a muon. The result sheds light on a decade-old puzzle regarding the proton radius.
Find News in https://www.nature.com/articles/d41586-021-00120-0
Publication List
Tzu-Ling Chen , Andrew Salij , Ms Katherine Parrish , Julia Rasch , Paige Brown , Abitha Dhavamani , Francesco Urraci , Professor Gennaro Pescitelli , Laura Antonella Aronica , Francesco Zinna , Professor Michael Arnold , Michael Wasielewski , Lorenzo Di Bari , Roel Tempelaar, Randall Goldsmith (2024), "A 2D Chiral Microcavity based on Apparent Circular Dichroism." (accepted by Nature Communication)
L. A. Sterczewski*, T.-L. Chen*, D. C. Ober, C. R. Markus, C. L. Canedy, I. Vurgaftman, C. Frez, J. R. Meyer, M. Okumura, and M. Bagheri (2022), "Cavity-enhanced Vernier spectroscopy with a chip-scale mid-infrared frequency comb," ACS Photonics (✿ Journal cover).
Tzu-Ling Chen, Douglas C. Ober, Robin Miri, Thinh Q. Bui, Linhan Shen, Mitchio Okumura (2021) , "Optically switched dual-wavelength cavity ring-down spectrometer for high-precision isotope ratio measurements of methane δd in the near infrared," Analytical Chemistry 93 (16), 6375-6384. (link)
CREMA (Charge Radius Experiment with Muonic Atoms) collaboration (2021), "Measuring the α-particle charge radius with muonic helium-4 ions," Nature, 589, 527–531
Tzu-Ling Chen, Shao-Yu Chang, Yi-Jan Huang, Khemendra Shukla, Yao-Chin Huang, Te-Hwei Suen, Tzu-Yung Kuan, Jow-Tsong Shy, Yi-Wei Liu (2020). “Inverted-ladder-type optical excitation of potassium Rydberg states with hot and cold ensembles,” PHYSICAL REVIEW A, 101, 052507.
Wei-Ling Chen, Tzu-Ling Chen, Yi-Wei Liu (2019). “Sideband amplitude modulation absorption spectroscopy of CH4 at 1170 nm,” Optics Express, 27(15),21264.
CREMA collaboration (2018). “The next generation of laser spectroscopy experiments using light muonic atoms,” Journal of Physics: Conference Series, 1138, 012010
Yi-Jan Huang, D.N. Patel, Tzu-Ling Chen, Yao-Chin Huang, Yung-Chun Chan, Celine Nauer,b, Yi-Wei Liu, Li-Bang Wangb, Jow-Tsong Shy (2018). “Watt level single frequency tapered amplifier laser using narrow band interference filter,” Applied Optics, 57 (24), 7038-7044
CREMA collaboration (2018). “On the double peak structure of avalanche photodiode response to monoenergetic x-rays at various temperatures and bias voltages,” Journal of Instrumentation, 13(01), C01033
Tzu-Ling Chen and Yi-Wei Liu (2017). “Sub-Doppler resolution near-infrared spectroscopy at 1.28 μm with the noise-immune cavity-enhanced optical heterodyne molecular spectroscopy method,” Optics Letter, 42(13), 2447-2450
Tzu-Ling Chen and Yi-Wei Liu (2015). “Noise-immune cavity-enhanced optical heterodyne molecular spectrometry on N2O 1.283 μm transition based on a quantum-dot external-cavity diode laser,” Optics Letter, 40(18),4352-4355
Tzu-Ling Chen, Chang-Yi Lin, Jow-Tsong Shy, and Yi-Wei Liu (2013). “Tunable frequency-stabilization of an ultraviolet laser using a hollow-cathode lamp of atomic thallium,” JOSA B, 30(11), 2966-2969
Tzu-Ling Chen, Isaac Fan, Hsuan-Chen Chen, Chang-Yi Lin, Shih-En Chen, Jow-Tsong Shy, and Yi-Wei Liu (2012). “Absolute frequency measurement of the 6P1/2 → 7S1/2 transition in thallium,” PHYSICAL REVIEW A, 86(5), 052524(7)
Isaac Fan, Tzu-Ling Chen, Yu-Sheng Liu, Yu-Hung Lien, Jow-Tsong Shy, and Yi-Wei Liu (2011). “Prospects of laser cooling in atomic thallium,” PHYSICAL REVIEW A, 84(4), 042504(6)