Zobrazeno 1 - 10
of 58
pro vyhledávání: '"Takashi Buma"'
Publikováno v:
Photoacoustics, Vol 4, Iss 3, Pp 83-90 (2016)
We demonstrate optical resolution photoacoustic microscopy (OR-PAM) of lipid-rich tissue using a multi-wavelength pulsed laser based on nonlinear fiber optics. 1047 nm laser pulses are converted to 1098, 1153, 1215, and 1270 nm pulses via stimulated
Externí odkaz:
https://doaj.org/article/bcc6deb087d54bae834338a7dbd1a22a
Autor:
Takashi Buma
Publikováno v:
2020 IEEE International Ultrasonics Symposium (IUS).
Broadband fiber lasers have high pulse repetition rate and wide wavelength coverage, making them well suited for spectroscopic photoacoustic microscopy (PAM). These systems typically employ sequential wavelength scanning with an optical band-pass fil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9caf3dec95aeb1f3509f3dc121ebdeba
https://doi.org/10.1109/ius46767.2020.9251825
https://doi.org/10.1109/ius46767.2020.9251825
This chapter explores methods for high efficiency optoacoustic transduction using modern fabrication and materials technologies developed primarily for the communications industry. It presents methods to generate high-frequency ultrasound using the t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03acc89e8a8c39e39157e1d52f534b9a
https://doi.org/10.1201/9781420059922-23
https://doi.org/10.1201/9781420059922-23
Publikováno v:
Biomedical optics express. 9(1)
We demonstrate optical resolution photoacoustic microscopy (OR-PAM) of lipid-rich tissue between 1050–1714 nm using a pulsed supercontinuum laser based on a large-mode-area photonic crystal fiber. OR-PAM experiments of lipid-rich samples show the e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d304df3764cc6b90d090ad6227033fc
https://pubmed.ncbi.nlm.nih.gov/29359103
https://pubmed.ncbi.nlm.nih.gov/29359103
Publikováno v:
2017 IEEE International Ultrasonics Symposium (IUS).
Photoacoustic microscopy (PAM) is promising for label-free histology of lipid-rich tissue. Lipids have optical absorption peaks at 1.2 and 1.7 μm, but these wavelengths are typically produced with expensive optical parametric oscillator (OPO) lasers
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9798454195a99367f0b8eff17b5555de
https://doi.org/10.1109/ultsym.2017.8092147
https://doi.org/10.1109/ultsym.2017.8092147
Publikováno v:
Photoacoustics
Laser-ultrasonics is an attractive and powerful tool for the non-destructive testing and evaluation (NDT&E) of composite materials. Current systems for non-contact detection of ultrasound have relatively low sensitivity compared to contact peizotrans
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::83c2db49799387bf1c7bf28183ed22bd
Autor:
Meagan E. Carnes, Sarah A. Bradner, Kyra Burnett, Takashi Buma, Kevin T. Chico, Quynh B. Chu-Lagraff, Shaun S. Gordon, Ashok Ramasubramanian
Publikováno v:
Developmental Dynamics. 242:801-816
Background: Looping is a crucial phase during heart development when the initially straight heart tube is transformed into a shape that more closely resembles the mature heart. Although the genetic and biochemical pathways of cardiac looping have bee
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f422294569f4b12e76717ae2793e072
https://doi.org/10.1002/dvdy.23968
https://doi.org/10.1002/dvdy.23968
Autor:
Takashi Buma, Sang Won Choi
Publikováno v:
2016 IEEE International Ultrasonics Symposium (IUS).
Photoacoustic microscopy (PAM) of lipid-rich tissue requires laser pulses with a wavelength near 1210 nm. We have previously demonstrated a cost-effective alternative using cascaded stimulated Raman scattering (SRS) in an optical fiber. An optical fi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad1c19314b50603d811b464603372ad1
https://doi.org/10.1109/ultsym.2016.7728833
https://doi.org/10.1109/ultsym.2016.7728833
Autor:
Zhuopeng Zhang, Takashi Buma
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 17:169-176
Terahertz (THz) impulse imaging has many applications in security and nondestructive testing. Sparse THz arrays can dramatically reduce array complexity for imaging applications requiring a large field of view. Sparse arrays employing narrowband wave
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::336c4c45d1d4913363036f538a45f146
https://doi.org/10.1109/jstqe.2010.2046016
https://doi.org/10.1109/jstqe.2010.2046016
Publikováno v:
2015 IEEE International Ultrasonics Symposium (IUS).
Many applications in photoacoustic microscopy (PAM) use contrast agents that preferentially absorb light at wavelengths other than 532 nm. This usually requires the use of expensive dye or optical parametric oscillator (OPO) lasers. We have previousl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f554a3c003bd8dd3e12e8170aa7904d
https://doi.org/10.1109/ultsym.2015.0034
https://doi.org/10.1109/ultsym.2015.0034