An erratum is presented to correct the calculated figures of merit.
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http://dx.doi.org/10.1364/oe.14.004195 | DOI Listing |
Photoacoustics
February 2025
Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA.
Recent advances in Light Emitting Diode (LED) technology have enabled a more affordable high frame rate photoacoustic imaging (PA) alternative to traditional laser-based PA systems that are costly and have slow pulse repetition rate. However, a major disadvantage with LEDs is the low energy outputs that do not produce high signal-to-noise ratio (SNR) PA images. There have been recent advancements in integrating deep learning methodologies aimed to address the challenge of improving SNR in LED-PA images, yet comprehensive evaluations across varied datasets and architectures are lacking.
View Article and Find Full Text PDFSpectrochim Acta A Mol Biomol Spectrosc
December 2024
College of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, PR China. Electronic address:
Accurate determination of spectral parameters for carbon monoxide (CO) transitions is crucial for the development of laser absorption spectroscopy-based CO sensors. This study reports the measurement of line strengths, self-broadening coefficients, and their temperature-dependent exponents for three transitions in the first overtone band near 2.3 μm.
View Article and Find Full Text PDFWe present a high-power, nanosecond 630 nm beam generation based on Raman conversion and second-harmonic generation (SHG). 116.2 W, single-mode 1080 nm fiber laser based on 10/125 µm optical fiber is used as a pump source for Raman conversion and the 1260 nm seed laser diode helps the amplification of third-order Raman conversion, which results in 63.
View Article and Find Full Text PDFNat Commun
September 2024
Semiconductor Manufacturing Research Center, Korea Institute of Machinery and Materials, Daejeon, Republic of Korea.
Laser lift-off (LLO) of ultrathin polyimide (PI) films is important in the manufacturing of ultrathin displays. However, conventional LLO technologies face challenges in separating the ultrathin PI films without causing mechanical and electrical damage to integrated devices. Here, we propose a graphene-enabled laser lift-off (GLLO) method to address the challenges.
View Article and Find Full Text PDFTalanta
January 2025
State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China. Electronic address:
Confocal Raman microscopy is a powerful technique for identifying materials and molecular species; however, the signal from Raman scattering is extremely weak. Typically, handheld Raman instruments are cost-effective but less sensitive, while high-end scientific-grade Raman instruments are highly sensitive but extremely expensive. This limits the widespread use of Raman technique in our daily life.
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