Zobrazeno 1 - 10
of 305
pro vyhledávání: '"Osami Sasaki"'
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-13 (2024)
Abstract This study introduces a technique for generating stochastic electromagnetic (SEM) beams using a modified degenerate cavity laser in which one mirror is substituted with a spatial light modulator (SLM). We propose two methods to manipulate th
Externí odkaz:
https://doaj.org/article/2569a1e0f1784e95be0d74a0e6c1c245
Publikováno v:
IEEE Photonics Journal, Vol 16, Iss 4, Pp 1-7 (2024)
Inaccurate wavelength calibration for spectral-domain optical coherence tomography (SD-OCT) generates a depth-dependent broadening of coherence peak. In this paper, a simple technique is proposed to eliminate the wavelength calibration error by the s
Externí odkaz:
https://doaj.org/article/a073c47c1d384a0381b19568d1f9c5e9
Publikováno v:
Optical Technology and Measurement for Industrial Applications Conference 2022.
Publikováno v:
Optics Continuum. 2:683
Measurements of phase refractive indexes of thick objects by using fitting method have been reported in many papers, but the fitting method produces errors in the fitted coefficients of a fitting function. In this paper it is made clear that the thic
Publikováno v:
IEEE Journal of Quantum Electronics. 56:1-6
We investigate intracavity second harmonic generation (SHG) in a degenerate laser for generating green laser with controllable degree of coherence. It is shown that spatial coherence of the SHG emission can be controlled by varying the diameter of th
Publikováno v:
Twelfth International Conference on Information Optics and Photonics.
We present accurate signal processing techniques based on the continuous wavelet transform (CWT) for nonstationary optical coherence tomography (OCT) interference signals. OCT is attracting considerable attention in the clinical, scientific, and engi
Publikováno v:
Optical Metrology and Inspection for Industrial Applications VIII.
A high resolution spectrum analyzer is required to measure a large thickness of a glass plate with a spectral resolved interferometer. In order to solve this requirement, two positions of a reference surface are used to produce short optical differen
Publikováno v:
Optics Continuum. 1:2287
Vortex beams (VBs), a type of light beam with a spiral wavefront, have unique properties, such as the orbit angular momentum (OAM), and diverse applications in optical communications and optical trapping and tweezers. Therefore, accurate measurements
Publikováno v:
Optics Communications. 431:51-57
In swept source optical coherence tomography (SSOCT), the imaging depth range sometimes limits its application, such as the whole eye measurement. The methods of extending depth range usually need to redesign the system or add some additional devices
Publikováno v:
Optics Letters. 47:1871
In this study, a novel, to the best of our knowledge, external-cavity laser diode (ECLD) without a diffraction grating is proposed and demonstrated. In the proposed configuration, an acousto-optic deflector (AOD) acts not only as a deflector but also