In this section you will find a brief description of my current and past research lines and selected publications associated to each of them. For a the complete list of my peer-reviewed publications and statistics on citations, please visit my Publons and/or Google Scholar profiles.
Simulation and study of complex laser dynamics in nanophotonic devices. In addition to study dynamics in laser devices with novel and exotic photonic properties, I am applying Machine and Deep Learning algorithms to design nanolasers that can deliver controllable and on demand output signal dynamics (CW, chaos, ultrashort pulses, ...).
Selected publications:
L. Cerdán, "Ultrashort pulse generation in nanolasers by means of Lorenz-Haken instabilities," Ann. Phys. (Berlin) 2100122, 1-11 (2021)
Development of tools and protocols to analyze and characterize spectroscopic gain properties in active waveguides and solutions. My latest achievement in this ground has been the development of a new methodology, implemented in a Graphical User Interface (ASE Gain Labs), that allows retrieving from a single ASE experiment, the spectrally resolved losses coefficient and net optical gains at all pump values, as well as to calculate, instead of visually finding, the ASE threshold.
Selected publications:
L. Cerdán, "Simultaneous retrieval of optical gains, losses, and threshold in active waveguides," Opt. Laser. Tech. 121, 105814 (2020)
L. Cerdán, "Variable Stripe Length Method: Influence of stripe length choice on measured optical gain," Opt. Lett. 42, 5258-5261 (2017)
L. Cerdán et al. "On the characteristic lengths in the variable stripe length method for optical gain measurements," J. Opt. Soc. Am. B 27, 9, 1874-1877 (2010)
Study and characterization of the laser and photophysical properties of novel luminescent boranes (inorganic boron hydrides). I am in charge of the laser characterization and some of the photophysical studies, as well as the development of numerical and analytical tools to understand the laser, photophysical, and photochemical performance of these compounds. The new materials are synthesized by Dr. Londesborough (Academy of Science of the Czech Republic), with whom I maintain a long-standing and fruitful collaboration.
Selected publications:
L. Cerdán et al., "Unveiling the role of upper excited electronic states in the photochemistry and laser performance of anti-B18H22,"
J. Mater. Chem. C 8, 12806 (2020) [Selected for the journal Cover]
M. G. S. Londesborough et al., "Thermochromic fluorescence from B18H20(NC5H5)2- An inorganic-organic composite luminescent material
with an unusual molecular geometry," Adv. Opt. Mater. 5, 1600694 (2017)
L. Cerdán et al., "A borane laser," Nat. Commun. 6, 5958 (2015)
This is the main collaborative research line of the Laser Materials and Interaction Laser-Materials Group at IQFR (CSIC), in which I have participated as a hired researcher. My duties include[d] the characterization of the laser emission in solutions or in thin films, but my main role consisted of contributing with advanced data analysis and providing insights and new ideas when the "physics" and "photonics" content was more involved (lasing in J-aggregates or exciplexes, laser induced birefringence, Stark-Lo Surdo effect, ...).
Selected publications:
E. Avellanal-Zaballa et al., "Taming the photonic behavior of laser dyes through specific and dynamic self-assembly onto cellulose nanocrystals,"
Adv. Photonics Res. 2, 2000107 (2021)
L. Cerdán, "Circularly polarized emission induced in isotropic and achiral dye systems," Sci. Rep. 6, 28740 (2016)
L. Cerdán, "State of the art active materials for organic lasers", in Organic lasers - fundamentals, developments, and applications.
Eds. M. Anni and S. Lattante (Pan Stanford Publishing). ISBN: 978-98-14774-46-8
Characterization and simulation of the changes in the photophysical and laser properties upon incorporation of nanoparticles to dye solutions or confinement of the dyes in colloidal polymer nanoparticles. This was one of the topics of my PhD thesis. It is currently mostly inactive.
Selected publications:
L. Cerdán et al., "FRET-assisted laser emission in colloidal suspensions of dye-doped latex nanoparticles," Nat. Photonics 6, 621-626 (2012)
L. Cerdán et al., "Laser efficiency enhancement due to non-resonant feedback in dye-doped hybrid materials: Theoretical insights and experiment," IEEE J.
Quantum Electron. 47, 7, 907-919 (2011)
A. Costela, "Dye-doped POSS solutions: Random nanomaterials for laser emission," Adv. Mater. 21, 4163-4166 (2009)
Characterization and optimization of dye doped polymer thin films as waveguided amplifiers (ASE devices) or laser devices. This was one of the topics of my PhD thesis. It is currently mostly inactive.
Selected publications:
L. Cerdán et al., "Random lasing from sulforhodamine dye doped polymer films with high surface roughness," Appl. Phys. B 108, 839-850 (2012)
L. Cerdán et al., "New perylene-doped polymeric thin films for efficient and long-lasting lasers," J. Mater. Chem. 22, 8938-8947 (2012)
A. Costela, "Amplified spontaneous emission and optical gain measurements from pyrromethene 567-doped polymer waveguides and quasi-waveguides," Opt. Express 16,
10, 7023-7036 (2008)