Spectroscopic signatures of HHe2+ and HHe3+

2020 ◽  
Vol 22 (40) ◽  
pp. 22885-22888
Author(s):  
Matthias Töpfer ◽  
Anders Jensen ◽  
Keigo Nagamori ◽  
Hiroshi Kohguchi ◽  
Tamás Szidarovszky ◽  
...  
Keyword(s):  
High Resolution ◽  
Quantum Cascade Laser ◽  
Ion Trap ◽  
Spectroscopic Techniques ◽  
Quantum Cascade ◽  
Spectroscopic Signatures ◽  
Nominal Temperature

Using two different action spectroscopic techniques, a high-resolution quantum cascade laser and a cryogenic ion trap machine, the proton shuttle motion of the cations HHe2+ and HHe3+ has been probed at a nominal temperature of 4 K.

scholarly journals High resolution quantum cascade laser spectroscopy of the simplest Criegee intermediate, CH2OO, between 1273 cm−1 and 1290 cm−1

2017 ◽  
Vol 146 (24) ◽  
pp. 244302 ◽  
Author(s):  
Yuan-Pin Chang ◽  
Anthony J. Merer ◽  
Hsun-Hui Chang ◽  
Li-Ji Jhang ◽  
Wen Chao ◽  
...  
Keyword(s):  
High Resolution ◽  
Laser Spectroscopy ◽  
Quantum Cascade Laser ◽  
Quantum Cascade

scholarly journals Tuning properties of mid-infrared Fabry-Pérot quantum cascade lasers for multiheterodyne spectroscopy

2016 ◽  
Vol 8 (4) ◽  
pp. 113 ◽  
Author(s):  
Lukasz Antoni Sterczewski ◽  
Jonas Westberg ◽  
Gerard Wysocki
Keyword(s):  
High Resolution ◽  
Quantum Cascade Laser ◽  
Quantum Cascade Lasers ◽  
Laser Frequency ◽  
Hole Burning ◽  
Mid Infrared ◽  
Frequency Combs ◽  
Quantum Cascade ◽  
Fabry Perot ◽  
Cascade Lasers

Injection current tuning properties of an 8.5 um Fabry-Pérot mid-infrared quantum cascade laser are evaluated by analyzing the mode-by-mode frequency tuning behavior with an identification of high-noise regimes in a delayed self-heterodyne experiment. We find that modes on the edges of the spectral envelope exhibit anomalous tuning coefficients compared to those in the center. Furthermore, the frequencies of individual modes are susceptible to parasitic etalons, likely causing laser frequency pulling. Despite the complicated tuning behavior, low phase-noise operating regimes exist, and are compatible with high resolution multiheterodyne spectroscopy of gases. Full Text: PDF ReferencesJ. Faist, F. Capasso, D.L. Sivco, C. Sirtori, A.L. Hutchinson, A.Y. Cho, "Quantum Cascade Laser", Science 264 (1994) 553?556. CrossRef A. Hugi, G. Villares, S. Blaser, H.C. Liu, J. Faist, "Mid-infrared frequency comb based on a quantum cascade laser", Nature 492 (2012) 229?233. CrossRef G. Villares, A. Hugi, S. Blaser, J. Faist,"Dual-comb spectroscopy based on quantum-cascade-laser frequency combs", Nat. Commun. 5 (2014) 5192. CrossRef G. Villares, S. Riedi, J. Wolf, D. Kazakov, M.J. Süess, P. Jouy, M. Beck, J. Faist, "Dispersion engineering of quantum cascade laser frequency combs", Optica 3 (2016) 252. CrossRef Y. Wang, M.G. Soskind, W. Wang, G. Wysocki, "High-resolution multi-heterodyne spectroscopy based on Fabry-Perot quantum cascade lasers", Appl. Phys. Lett. 104 (2014) 31114. CrossRef A. Hangauer, J. Westberg, E. Zhang, G. Wysocki, "Wavelength modulated multiheterodyne spectroscopy using Fabry-Pérot quantum cascade lasers", Opt. Express 24 (2016) 25298. CrossRef D. Burghoff, Y. Yang, D.J. Hayton, J.-R. Gao, J.L. Reno, Q. Hu, "Evaluating the coherence and time-domain profile of quantum cascade laser frequency combs", Opt. Express 23 (2015) 1190?1202. CrossRef A. Gordon, C.Y. Wang, L. Diehl, F.X. Kärtner, A. Belyanin, D. Bour, S. Corzine, G. Höfler, H.C. Liu, H. Schneider, T. Maier, M. Troccoli, J. Faist, F. Capasso, "Multimode regimes in quantum cascade lasers: From coherent instabilities to spatial hole burning", Phys. Rev. A 77 (2008). CrossRef S. Blaser, D.A. Yarekha, L. Hvozdara, Y. Bonetti, A. Muller, M. Giovannini, J. Faist, "Room-temperature, continuous-wave, single-mode quantum-cascade lasers at ?=5.4?m", Appl. Phys. Lett. 86 (2005) 41109. CrossRef S. Schiller, "Spectrometry with frequency combs", Opt. Lett. 27 (2002) 766?768. CrossRef T. Tsai, G. Wysocki, "Active wavelength control of an external cavity quantum cascade laser", Appl. Phys. B Lasers Opt. 109 (2012) 415?421. CrossRef

High-resolution terahertz inline digital holography based on quantum cascade laser

2017 ◽  
Vol 56 (11) ◽  
pp. 1 ◽  
Author(s):  
Qinghua Deng ◽  
Weihua Li ◽  
Xuemin Wang ◽  
Zeyu Li ◽  
Haochong Huang ◽  
...  
Keyword(s):  
High Resolution ◽  
Quantum Cascade Laser ◽  
Digital Holography ◽  
Quantum Cascade
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