Personal Info:
Maribel Juárez Hernández studied Physical Engineering at Universidad de Guanajuato. Her thesis led her to venture into the area of interferometry and optical metrology where her interest in studying a Master's degree and later a PhD. at the Centro de Investigaciones en Óptica, A.C. During this period she carried out a short research stay at the Universidad Autónoma del Carmen (UNACAR) in Campeche, México, where she carried out applied research work on Raman fiber optic lasers. In 2018, he entered at Universidad de Guanajuato as a research professor through the National Postdoctoral Program of the National Council of Science and Technology (CONACyT). Where she joined the group of particle accelerators of this university for the development of the project: "Assembly and operation of a 5 MeV linear accelerator for industrial and research applications". As a result of this project, he carried out research stays at the National Synchrotron Light Laboratory in Campinas, Brazil and at Lancaster University in the United Kingdom. She is currently a researcher at the Centro de Investigaciones en Óptica, A.C. since June 2020. She has lectured at the Universidad de Guanajuato, at the División de Ciencias e Ingenierías at Bachelor level during his Postdoctoral stay. She has been a member of the National System of Researchers (SNII) since 2018, and has published various research articles in international journals.
Research Lines:
- RE-Doped Optical fiber lasers and amplifiers (in the NIR-VIS and UV regions). Fluorozirconate based glass fibers (ZBLAN) doped with rare-earth ions have many properties that make them very suitable for fiber lasers and amplifiers. They have many more metastable levels compared to silica-based fibers. These fibers have an extended transmitting window beyond silica in both UV and IR with background loss located around 3500 nm of one order of magnitude lower than that of silica [1].
- Raman Fiber Lasers and amplifiers. Stimulated Raman scattering (SRS) has been the subject of intense theoretical and experimental research in the fields of nonlinear optics and optical fibers. The SRS phenomenon is very effective for generating and/or amplifying optical signals in the wavelength region of 1.1 μm - 1.7 μm. We have performed experimental and theoretical studies of the signals delivered by a cascaded Raman fiber laser under different thermal and output coupling conditions. We have observed that feedback reflectivity and thermal variations have a great influence on Stokes to Stokes energy-transfer mechanisms. This is useful for improving the performance in long-range optical communications links, to amplify wavelength-division-multiplexed signals, signal processing, laser spectroscopy, and sensing systems; as well as for medical applications [2-5].
- Optical spectroscopy of doped materials. The need for obtaining short wavelength operation sources is constantly increasing. These types of light sources are already highly used in a huge range of disciplines and applications such as laser microscopy, biomedicine, digital photofinishing, optical data storage, pump sources, laser projector displays, among others. These sources are often obtained from frequency doubling or tripling lasers emitting around 600 nm ‒ 1100 nm (such as Nd: YAG, Nd: YVO, and Nd: YAIO3). Nevertheless, these kinds of lasers are usually bulky and they often need external cooling systems, increasing costs for operation and maintenance. As an alternative to solid-state lasers systems, the up-conversion RE doped fiber lasers are excellent candidates
References:
- [1] D. Welch et al., “Far-UVC light: A new tool to control the spread of airborne-mediated microbial diseases,” Sci. Rep., vol. 8, no. 1, pp. 1–7, Dec. 2018.
- [2] D. A. Pegues, J. Han, C. Gilmar, B. McDonnell, and S. Gaynes, “Impact of Ultraviolet Germicidal Irradiation for No-Touch Terminal Room Disinfection on Clostridium difficile Infection Incidence among Hematology-Oncology Patients,” Infection Control and Hospital Epidemiology, vol. 38, no. 1. Cambridge University Press, pp. 39–44, 01-Jan-2017.
- [3] B. K. Saifaddin et al., “AlGaN Deep-Ultraviolet Light-Emitting Diodes Grown on SiC Substrates,” ACS Photonics, vol. 7, no. 3, pp. 554–561, Mar. 2020.
- [4] E. M. Wurtzler and D. Wendell, “Selective Photocatalytic Disinfection by Coupling StrepMiniSog to the Antibody Catalyzed Water Oxidation Pathway,” PLoS One, vol. 11, no.9, p. e0162577, Sep. 2016.
- [5] S. Mallidi, S. Anbil, A. L. Bulin, G. Obaid, M. Ichikawa, and T. Hasan, “Beyond the barriers of light penetration: Strategies, perspectives and possibilities for photodynamic therapy,” Theranostics, vol. 6, no. 13, pp. 2458–2487, 2016
Strategic areas:
Long-range optical communications links, to amplify wavelength-division-multiplexed signals, signal processing, laser spectroscopy, and sensing systems; as well as for medical applications, laser microscopy, biomedicine, digital photofinishing, optical data storage, pump sources, laser projector displays, sensors, etc.
Recent publications:
2020
- M. Juárez-Hernández and E. B. Mejía, “Spectral analysis of short-wavelength emission by up-conversion in a Tm3+:ZBLAN dual-diode-pumped optical fiber,” Chinese Opt. Lett., vol. 18, no. 7, p. 071901, May 2020. DOI: 10.3788/COL202018.071901.
2017
- E. B. Mejía, M. Juárez-Hernández, and L. De la Cruz-May. “Second (1178 nm) and third (1242 nm) Stokes Raman fiber lasers without intermediate Stokes cavities”. Laser Physics, Volume 27, Number 7. DOI:10.1088/1555-6611/aa7833
- M. Juárez-Hernández, E. B. Mejía. “Red laser-diode pumped 806 nm Tm3+: ZBLAN fibre laser”. Laser Physics Letters, Volume 14, Number 06. DOI: 10.1088/1612-202X/aa6dbe
2016
- M. Juárez-Hernández, E. B. Mejía, L. de la Cruz-May, O. Benavides. “Stokes-to-Stokes and anti-Stokes-to-Stokes energy transfer in a Raman fibre laser under different cavity configurations”. Laser Physics, Volume 26, Number 11. DOI: 10.1088/1054-660X/26/11/115105
- M. Juárez-Hernández, E.B Mejía. “Laser-conversion from a red laser-diode (687- nm) to IR (806-nm) by using a Tm3+-doped ZBLAN optical fiber”. OSA Technical Digest (2016), paper SM3Q.8;DOI:10.1364/CLEO_SI.2016.SM3Q.8
