报告题目

Ultrafast thulium fiber lasers and applications in mid-infrared vibrational photothermal imaging

报 告 人

Dr. Michelle Sande

Department of Electrical and Computer Engineering Boston University

报告地点

物理楼 中215

报告时间

2017年11月19日 (星期日) 9:30-10:30

联 系 人

施可彬 (Tel: 6276 8959)

报告摘要

Passively mode-locked fiber lasers offer a compact, turn-key, self-starting operation platform. Thulium fibers offer an attractive gain medium in the eye safe region from 1.7 µm to 2.2 µm, for applications in gas/environmental sensing, biomedical diagnosis and surgery and nonlinear conversion. In this talk, soliton pulse dynamics will be discussed to generate a dual output, orthogonally polarized fiber laser as well as self-organized multiple pulsing operation. Integration of a fiber laser into mid-infrared vibrational photothermal spectroscopy in the fingerprint region (at wavelengths ~5μm and longer) can reveal characteristic details about molecular compounds and secondary structure of chemicals and biomolecules with high sensitivity and specificity. Applications of the presented system can range from chemical trace hazardous material detection, to cancer identification based on secondary protein configurations, remote sensing and process control.

报告人简介：Dr. Michelle Sander is an assistant professor in the Department of Electrical and Computer Engineering at Boston University and an affiliated faculty with the Materials Science and Engineering Division. She received her PhD in Electrical Engineering from the Massachusetts Institute of Technology in the Optics and Quantum Electronics Group. Her research interest include the development of innovative novel ultrafast fiber, characterization of femtosecond dynamics and applications to vibrational spectroscopy and biomedical imaging. Dr. Sander received an AFOSR Young Investigator Award, is the recipient of two BU Dean’s Catalyst Awards and the BU Nanotechnology Innovation Center Award. In 2017, she serves as an OSA Ambassador.