Ms. Erika Colin-Ulloa Profile

Erika Colin-Ulloa

Graduate Research Assistant at Worcester Polytechnic Institute

SPIE Involvement:

Author

Area of Expertise:

Transient Absorption Spectroscopy , 2D materials , THz spectroscopy , PL spectroscopy

Publications (4)

Proceedings Article | 8 March 2024 Presentation + Paper

Lepidocrocite TiO2 nanofilaments: optical properties revealed by ultrafast transient absorption

Erika Colin-Ulloa, Julia Martin, Ryan Hanna, Michelle Frasch, Rebecca Ramthun, Hussein Badr, Joshua Uzarski, Michel Barsoum, Ronald Grimm, Lyubov Titova

Proceedings Volume 12884, 1288409 (2024) https://doi.org/10.1117/12.2692704

KEYWORDS: Picosecond phenomena, Optical properties, Visible radiation, Ultrafast phenomena, Absorption, Nanomaterials, Titanium dioxide, Light absorption, Ultraviolet radiation, Toxic industrial chemicals

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Proceedings Article | 15 March 2023 Poster + Paper

Probing photoexcited free carrier dynamics of two-dimensional MXene, Nb2C, using ultrafast terahertz spectroscopy

Andrew Fitzgerald, Erika Colin-Ulloa, Javery Mann, Kiana Montezari, Michel Barsoum, Lyubov Titova

Proceedings Volume 12419, 124190K (2023) https://doi.org/10.1117/12.2650359

KEYWORDS: Terahertz spectroscopy, Terahertz radiation, Scattering, Optical properties, Spectroscopy, Picosecond phenomena, Electrical conductivity, Ultrafast laser spectroscopy, Materials properties, 2D materials, Electron transport

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Proceedings Article | 15 March 2023 Poster + Paper

Ultrafast carrier dynamics in 2D GeS in response to photoexcitation across the visible-NIR range

Sepideh Khanmohammadi, Catherine Tran, Erika Colin-Ulloa, Kateryna Kushnir, Kristie Koski, Lyubov Titova

Proceedings Volume 12419, 124190M (2023) https://doi.org/10.1117/12.2650672

KEYWORDS: Germanium, Terahertz radiation, Ultrafast phenomena, Picosecond phenomena, Carrier dynamics, Spectral response, Conduction bands, Spectroscopy, Semiconductors, Crystals

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Proceedings Article | 15 March 2023 Presentation + Paper

Ultrafast dynamics of photoexcitations in 2D Ti3C2Tz, Mo2Ti2C3Tz, and Nb2CTz MXenes

Erika Colin-Ulloa, Kiana Montazeri, Varun Natu, Andrew Fitzgerald, Ken Ngo, Joshua Uzarski, Michel Barsoum, Lyubov Titova

Proceedings Volume 12419, 1241908 (2023) https://doi.org/10.1117/12.2649428

KEYWORDS: Electrical conductivity, Absorption, Niobium, Terahertz radiation, Spectroscopy, Molybdenum, Plasmonics, Picosecond phenomena, Optical properties, Light absorption

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