Results 81 to 90 of about 110,231 (192)

Robust, frequency-stable and accurate mid-IR laser spectrometer based on frequency comb metrology of quantum cascade lasers up-converted in orientation-patterned GaAs

, 2013
We demonstrate a robust and simple method for measurement, stabilization and tuning of the frequency of cw mid-infrared (MIR) lasers, in particular of quantum cascade lasers.
Ernsting, Ingo, Grisard, Arnaud, Gérard, Bruno, Hansen, Michael G., Lallier, Eric, Schiller, Stephan, Vasilyev, Sergey V.   +6 more
core   +1 more source

Mid-infrared lasers: Challenges imposed by the population dynamics of the gain system [PDF]

, 2010
This paper discusses the influence of the population dynamics on mid-infrared lasers. Specifically, the typically longer lifetime of the lower compared to the upper laser level has to be addressed in order to achieve highly efficient laser operation in ...
Pollnau, Markus
core   +1 more source

High-speed mid-infrared laser absorption spectroscopy of CO 2 for shock-induced thermal non-equilibrium studies of planetary entry. [PDF]

Appl Phys B, 2022
Jelloian CC, Minesi NQ, Spearrin RM.
europepmc   +1 more source

Mid-infrared Laser Spectroscopy of Jet-Cooled Formic Acid Trimer: Mode-Dependent Line Broadening in the C-O Stretching Region. [PDF]

J Phys Chem Lett, 2023
Nejad A, Li X, Zhu T, Liu Y, Duan C.
europepmc   +1 more source

Mid-infrared laser measurements of aqueous glucose

Journal of Biomedical Optics, 2007
Mid-IR semiconductor lasers of two wavelength bands, 5.4 and 9.6 microm, are applied to measure aqueous glucose concentration ranging from 0 to 500 mgdL with Intralipid emulsion (0 to 8%) added as a fat simulator. The absorption coefficient micro(a) is found linear with respect to glucose and Intralipid concentrations, and their specific absorption ...
Bujin, Guo, Yi, Wang, Yang, Wang, Han Q, Le   +3 more
openaire   +2 more sources

Self-Pulsed Nanosecond 2.7- $\mu\text{m}$ Solid-State Erbium Laser by Cooperatively Enhanced Reabsorption

IEEE Photonics Journal, 2015
The nanosecond self-pulsing operation of a midinfrared solid-state laser with no additional passive absorbers is reported in this paper. A proof-of-principle demonstration of the cooperatively enhanced reabsorption method, in which two laserdiode-pumped ...
H. T. Huang, L. Wang, D. Y. Shen, J. Zhang, D. Y. Tang   +4 more
doaj   +1 more source

Transforming a Mid-infrared Laser Profile from Gaussian to a Top-Hat with a Diffractive Optical Element for Mass Spectrometry Imaging. [PDF]

J Am Soc Mass Spectrom, 2023
Bai H, Manni JG, Muddiman DC.
europepmc   +1 more source

In Situ Measurement of NO, NO₂, and H₂O in Combustion Gases Based on Near/Mid-Infrared Laser Absorption Spectroscopy. [PDF]

Sensors (Basel), 2022
Li J, Li R, Liu Y, Li F, Lin X, Yu X, Shao W, Xu X.   +7 more
europepmc   +1 more source

Mid-Infrared Laser Generation of Zn_1-xMn_xSe and Zn_1-xMg_xSe (x ≈ 0.3) Single Crystals Co-Doped by Cr²⁺ and Fe²⁺ Ions-Comparison of Different Excitation Wavelengths. [PDF]

Materials (Basel), 2022
Říha A, Jelínková H, Doroshenko ME, Jelínek M, Šulc J, Němec M, Vyhlídal D, Kovalenko NO.   +7 more
europepmc   +1 more source

Development of Carbon Dioxide Detection Device Based on Mid-Infrared Cavity Decay Spectroscopy Technology

Journal of Isotopes
With the rapid development of the nuclear industry，the amount of waste to be treated and monitored increases，and the potential emissions will also increase，and C-14 needs to be monitored. C-14 produced by nuclear facilities is mainly combined with CO2，so
Junbo ZHANG, Naqing MAO, Lijun XU, Rui LUO, Yuanqiao LI, Juhan LAI, Yuntao LIU   +6 more
doaj   +1 more source