Multi-wavelength photoacoustic system based on high-power diode laser bars

Luca Leggio; Bartosz Wiśniowski; Sandeep Babu Gawali; Sergio Rodríguez; Miguel Sánchez; Daniel Gallego; Guillermo Carpintero; Horacio Lamela

doi:10.1117/12.2254871

22 March 2017 Multi-wavelength photoacoustic system based on high-power diode laser bars

Luca Leggio, Bartosz Wiśniowski, Sandeep Babu Gawali, Sergio Rodríguez, Miguel Sánchez, Daniel Gallego, Guillermo Carpintero, Horacio Lamela

Author Affiliations +

Proceedings Volume 10064, Photons Plus Ultrasound: Imaging and Sensing 2017; 1006441 (2017) https://doi.org/10.1117/12.2254871
Event: SPIE BiOS, 2017, San Francisco, California, United States

Abstract

Multi-wavelength laser sources are necessary for a functional photoacoustic (PA) spectroscopy. The use of high-power diode lasers (HPDLs) has aroused great interest for their relatively low costs and small sizes if compared to solid state lasers. However, HPDLs are only available at few wavelengths and can deliver low optical energy (normally in the order of μJ), while diode laser bars (DLBs) offer more wavelengths in the market and can deliver more optical energy. We show the simulations of optical systems for beam coupling of single high-power DLBs operating at different wavelengths (i.e. 808 nm, 880 nm, 910 nm, 940 nm, and 980 nm) into 400-μm optical fibers. Then, in a separate design, the beams of the DLBs are combined in a compact system making use of dichroic mirrors and focusing lenses for beam coupling into a 400-μm optical fiber. The use of optical fibers with small core diameter (< 1 mm) is particularly suggestive for future photoacoustic endoscopy (PAE) applications that require interior examination of the body.

Citation Download Citation

Luca Leggio, Bartosz Wiśniowski, Sandeep Babu Gawali, Sergio Rodríguez, Miguel Sánchez, Daniel Gallego, Guillermo Carpintero, and Horacio Lamela "Multi-wavelength photoacoustic system based on high-power diode laser bars", Proc. SPIE 10064, Photons Plus Ultrasound: Imaging and Sensing 2017, 1006441 (22 March 2017); https://doi.org/10.1117/12.2254871

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available