Abstract

By stabilizing the evaporation dynamics of a microliter fluorocarbon droplet, we demonstrate a fast-scan optofluidic Fourier transform (FT) spectrometer on the tip of an optical fiber operating in the 1000–2000 nm window with a resolution of 3.5 cm⁻¹ (i.e., <1 nm at 1560 nm). Compared with other FT near-infrared (NIR) small-scale spectrometers reported in the literature, the fluorocarbon droplet spectrometer shows the largest wavelength span and span/resolution ratio, allowing spectral analysis of broadband or narrowband radiation to be easily performed. Our results open the way for the practical application of droplet spectrometers as advanced optofluidic NIR analyzers with small size and low cost that are capable of operating in harsh environments, even in the absence of electrical power sources.

© 2021 Optica Publishing Group

Broadband Fourier-transform silicon nitride spectrometer with wide-area multiaperture input

David González-Andrade, Thi Thuy Duong Dinh, Sylvain Guerber, Nathalie Vulliet, Sébastien Cremer, Stephane Monfray, Eric Cassan, Delphine Marris-Morini, Frédéric Boeuf, Pavel Cheben, Laurent Vivien, Aitor V. Velasco, and Carlos Alonso-Ramos
Opt. Lett. 46(16) 4021-4024 (2021)

High-resolution multi-scan compact Fourier transform-infrared spectrometer

Erga Lifshitz, Uri Arieli, Shahar Katz, Iftach Nir, Assaf Levanon, Michael Mrejen, and Haim Suchowski
Opt. Lett. 44(12) 3126-3129 (2019)

Hybrid high spectral resolution broadband mid-infrared SFG spectrometer development and demonstration

Karolis Madeikis, Robertas Kananavicius, Rokas Danilevicius, Audrius Zaukevicius, Regimantas Januskevicius, and Andrejus Michailovas
Opt. Express 29(16) 25344-25357 (2021)

Broadband mid-infrared phase retrieval for nonlinear microscopy

Niklas Müller, Florian Nicolai, and Tiago Buckup
Opt. Lett. 46(19) 5012-5015 (2021)

High-resolution fast mid-wave infrared compressive imaging

Linxia Zhang, Jun Ke, Sheng Chi, Xiaowen Hao, Tong Yang, and Dewen Cheng
Opt. Lett. 46(10) 2469-2472 (2021)