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Title: Ultrasound modulated droplet lasers
Authors: Li, Xuzhou
Qin, Yu
Tan, Xiaotian
Chen, Yu-Cheng
Chen, Qiushu
Weng, Wei-Hung
Fan, Xudong
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2019
Source: Li, X., Qin, Y., Tan, X., Chen, Y-C., Chen, Q., Weng, W.-H., . . . Fan, X. (2019). Ultrasound modulated droplet lasers. Proceedings of SPIE - Photons Plus Ultrasound: Imaging and Sensing 2019, 10878, 108784L-. doi:10.1117/12.2507568
Abstract: We demonstrated the ultrasound modulated droplet lasers, in which the laser intensity from whispering gallery mode (WGM) of oil droplets can be reversibly enhanced up to 20-fold when the ultrasound pressure is beyond a certain threshold. The lasing enhancement was investigated with various ultrasound frequencies and pressures. Furthermore, the ultrasound modulation of the laser output was achieved by controlling the ultrasound pressure, the duty cycle, and the frequency of ultrasound bursts. Its potential application was explored via the study on a human whole blood vessel phantom. A theoretical analysis was also conducted, showing that the laser emission enhancement results from the directional emission from a deformed cavity under ultrasound pressure. Our studies reveal the unique capabilities of ultrasound modulated droplet lasers, which could lead to the development of laser emission-based microscopy for deep tissue imaging with high spatial resolution and detection sensitivity that may overcome the long-standing drawback of traditional fluorescence imaging.
ISBN: 9781510623989
DOI: 10.1117/12.2507568
Rights: Copyright 2019 Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Conference Papers

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