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首页> 外文期刊>Japanese journal of applied physics >Wideband Infrared Emission From Yb~(3+)- And Nd~(3+)-doped Bi_2o_3-b_2o_3 Glass Phosphor For An Optical Coherence Tomography Light Source
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Wideband Infrared Emission From Yb~(3+)- And Nd~(3+)-doped Bi_2o_3-b_2o_3 Glass Phosphor For An Optical Coherence Tomography Light Source

机译：Yb〜（3+）和Nd〜（3+）掺杂的Bi_2o_3-b_2o_3玻璃荧光粉的宽带红外发射用于光学相干层析成像光源

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摘要

We have investigated the spectroscopic properties of Bi_2O_3-B_2O_3 glasses doped with Nd~(3+) and Yb~(3+) separately, and doubly doped with the same ions, in order to search for appropriate phosphors for an optical coherence tomography (OCT) light source. The effects of Yb~(3+) and Nd~(3+) co-doping and varying Yb~(3+) concentration on the spectrum shape were studied to obtain an optimum line shape for OCT. We successfully obtained a Gaussian-like shape spectrum from 5.0Yb_2O_3-1.0Nd_2O_3-46.0Bi_2O_3-46.0B_2O_3 (in nominal molar composition) with a full-width-at-half-maximum (FWHM) of 101 nm in the wavelength region around 1000nm. This FWHM corresponds to a depth resolution of 4.5 μm, which is about twice that of conventional light emitting diodes (LEDs) and super luminescent diodes (SLDs). The Gaussian-like line shape is very important to suppress ghost images in OCT. These results indicate that a Yb~(3+), Nd~(3+) co-doped Bi_2O_3-B_2O_3 glass phosphor can indeed be applied as a new type of OCT light source.
机译：我们已经研究了分别掺有Nd〜（3+）和Yb〜（3+）并掺有相同离子的Bi_2O_3-B_2O_3玻璃的光谱性质，以便为光学相干层析成像（OCT）寻找合适的荧光粉。 ）光源。研究了Yb〜（3+）和Nd〜（3+）共掺杂以及不同的Yb〜（3+）浓度对光谱形状的影响，从而获得了最佳的OCT线形。我们成功地从5.0Yb_2O_3-3-1.0Nd_2O_3-46.0Bi_2O_3-4-6B_2O_3（以标称摩尔组成）获得了高斯形光谱，在1000nm左右的波长区域中，半峰最大宽（FWHM）为101nm 。该FWHM对应于4.5μm的深度分辨率，约为传统发光二极管（LED）和超发光二极管（SLD）的两倍。像高斯一样的线形对于抑制OCT中的重影非常重要。这些结果表明，Yb〜（3 +），Nd〜（3+）共掺杂的Bi_2O_3-B_2O_3玻璃荧光粉确实可以用作新型OCT光源。

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