More Like this

1. Quantitative infrared photothermal microscopy

   https://doi.org/10.1117/12.2545159  

   Pavlovetc, Ilia M.; Podshivaylov, Eduard A.; Frantsuzov, Pavel A.; Hartland, Gregory V.; Kuno, Masaru K. (February 2020, Proc. SPIE 11246, Single Molecule Spectroscopy and Super-resolution Imaging XIII)

   Gregor, Ingo; Erdmann, Rainer; Koberling, Felix (Ed.)

   Infrared photothermal heterodyne imaging (IR-PHI) represents a convenient table top approach for conducting superresolution imaging and spectroscopy throughout the all-important mid infrared (MIR) spectral region. Although IR-PHI provides label-free, superresolution MIR absorption information, it is not quantitative. In this study, we establish quantitative relationships between observed IR-PHI signals and relevant photothermal parameters of investigated specimens. Specifically, we conduct a size series analysis of different radii polystyrene (PS) beads so as to quantitatively link IR-PHI signal contrast to specimen heat capacity, MIR peak absorption cross-section, and scattering cross-section at IR-PHI’s probe wavelength. 

   more » « less
2. Photothermal Spectra of Semiconductors

   Marcano, Aristides; Luna, Jose; Tan, Songjian; Zhang, Tianyao. (September 2020, FiOS Conference 2020, Washington DC, OSA)

   null (Ed.)

   We measure and calibrate the photothermal spectra of Gallium Arsenide and Cadmium Telluride in the 400-800 nm spectral region using a white light source. The spectra yield the photothermal quantum yields of the materials. 

   more » « less
3. Photothermal Mirror Z-Scan

   Marcano, A. (May 2019, Conference on Lasers and Electro-Optics, OSA Technical Digest)

   This work describes a pump-probe photothermal mirror Z-scan experiment aimed at the determination of thermal diffusivity, thermoelastic coefficient, and quantum yield of thermal heating of the surface of transparent and non- transparent solid samples including films. 

   more » « less
4. Photonic Crystal Enhanced Photothermal Lens

   https://doi.org/10.1364/CLEO_SI.2017.STh4N.7  

   Zhao, Yunfei; Yin, Gufan; Hu, Juejun; Lu, Meng (January 2017, Conference on Lasers and Electro-Optics: Science and Innovations 2017)
5. Polarization‐Modulated Multidirectional Photothermal Actuators

   https://doi.org/10.1002/adma.202006367  

   Li, Zhiwei; Ye, Zuyang; Han, Lili; Fan, Qingsong; Wu, Chaolumen; Ding, Deng; Xin, Huolin L.; Myung, Nosang Vincent; Yin, Yadong (January 2021, Advanced Materials)

   null (Ed.)