During the last decades, there have been significant developments in the field of biomedical photonics. We are pleased to present a special issue of Frontiers of Optoelectronics on Biomedical Photonics, which assemble...During the last decades, there have been significant developments in the field of biomedical photonics. We are pleased to present a special issue of Frontiers of Optoelectronics on Biomedical Photonics, which assembles one letter, three reviews, and eight original research articles. Optical coherence tomography （OCT） has the ability to image tissues in vivo. Polarization-sensitive optical coherence tomography （PSOCT） is a functional extension of OCT. By measuring the polarization state of light reflecting or scattering back from tissue, PSOCT enables depth-resolved mapping of sample polarization information, such as phase-retardation and optical axis orientation. In this issue, Zhenyang Ding et al. gave a review of technology developments and biomedical applications of PSOCT. Fourier domain optical coherence tomography （FDOCT） provides cross-sectional images of tissuematerial microstructures by spectral analysis of the low-coherence interference fringe pattern. Zhihua Ding et al. developed two novel systems with ultralong depth range. One is the orthogonal dispersive spectral domain optical coherence tomography （SDOCT）, and the other is the recirculated swept source interferometer/OCT. No compromise between depth range and depth resolution is required in both systems. With their SDOCT system, Jian Gao et al. imaged mouse model with dorsal skin window chamber, they obtained a series of real-time OCT images and reconstructed 3D images of the specific area inside the dorsal skin window chamber by Amira.展开更多
Integrating sphere technique is widely used to measure the total reflectance and transmittance of turbid sample, but the unavoidable light loss induces some measuring error. It has never been reported whether the erro...Integrating sphere technique is widely used to measure the total reflectance and transmittance of turbid sample, but the unavoidable light loss induces some measuring error. It has never been reported whether the error depends on the shape and size of light beam. In this paper, a convolution for computing the responses to rectangular incident light beam based on the Monte Carlo method was presented. The effects of light beam shape and size, and optical properties of sample on the measurements were addressed. The results show that the light loss with rectangular incident light beam is larger than that with circular one with the same area. The more the area of light beam, the more the light loss. And the light loss induced by the optical properties of sample is much more significant than that by the shape and size of the incident light beam.展开更多
文摘During the last decades, there have been significant developments in the field of biomedical photonics. We are pleased to present a special issue of Frontiers of Optoelectronics on Biomedical Photonics, which assembles one letter, three reviews, and eight original research articles. Optical coherence tomography （OCT） has the ability to image tissues in vivo. Polarization-sensitive optical coherence tomography （PSOCT） is a functional extension of OCT. By measuring the polarization state of light reflecting or scattering back from tissue, PSOCT enables depth-resolved mapping of sample polarization information, such as phase-retardation and optical axis orientation. In this issue, Zhenyang Ding et al. gave a review of technology developments and biomedical applications of PSOCT. Fourier domain optical coherence tomography （FDOCT） provides cross-sectional images of tissuematerial microstructures by spectral analysis of the low-coherence interference fringe pattern. Zhihua Ding et al. developed two novel systems with ultralong depth range. One is the orthogonal dispersive spectral domain optical coherence tomography （SDOCT）, and the other is the recirculated swept source interferometer/OCT. No compromise between depth range and depth resolution is required in both systems. With their SDOCT system, Jian Gao et al. imaged mouse model with dorsal skin window chamber, they obtained a series of real-time OCT images and reconstructed 3D images of the specific area inside the dorsal skin window chamber by Amira.
文摘Integrating sphere technique is widely used to measure the total reflectance and transmittance of turbid sample, but the unavoidable light loss induces some measuring error. It has never been reported whether the error depends on the shape and size of light beam. In this paper, a convolution for computing the responses to rectangular incident light beam based on the Monte Carlo method was presented. The effects of light beam shape and size, and optical properties of sample on the measurements were addressed. The results show that the light loss with rectangular incident light beam is larger than that with circular one with the same area. The more the area of light beam, the more the light loss. And the light loss induced by the optical properties of sample is much more significant than that by the shape and size of the incident light beam.
