2021/03/01 by Eric O. Potma, Potma, Eric O., David Knez +19
Biochemistry, Genetics and Molecular Biology · Engineering · Medicine · Physics and Astronomy · #FOS: Physical sciences #Femtosecond #Infrared #Instrumentation and Detectors (physics.ins-det) #Laser #Materials science #Ocular Infections and Treatments #Optical Coherence Tomography Applications #Optical coherence tomography #Optics #Optics (physics.optics) #Optoelectronics #Penetration depth #Photoacoustic and Ultrasonic Imaging #Physics #Spectroscopy Techniques in Biomedical and Chemical Research #Tomographic reconstruction #Tomography #physics.ins-det #physics.optics
paper · pdf · doi:10.48550/arxiv.2103.01159
18 pages, 6 figures
arxiv created 2021/03/01 · openalex publication_date 2021/03/01 · arxiv updated 2021/03/02 · openalex created_date 2022/10/01 · openalex updated_date 2026/07/28
The emerging technique of mid-infrared optical coherence tomography (MIR-OCT)\ntakes advantage of the reduced scattering of MIR light in various materials and\ndevices, enabling tomographic imaging at deeper penetration depths. Because of\nchallenges in MIR detection technology, the image acquisition time is however\nsignificantly longer than for tomographic imaging methods in the\nvisible/near-infrared. Here we demonstrate an alternative approach to MIR\ntomography with high-speed imaging capabilities. Through femtosecond\nnon-degenerate two-photon absorption of MIR light in a conventional Si-based\nCCD camera, we achieve wide-field, high-definition tomographic imaging with\nchemical selectivity of structured materials and biological samples in mere\nseconds.\n