Wearable SiPM-Based NIRS Interface Integrated With Pulsed Laser Source
Wearable SiPM-Based NIRS Interface Integrated With Pulsed Laser Source
复制标题
与脉冲激光源集成的基于 SiPM 的可穿戴 NIRS 接口
DOI：
--
复制
发表时间：
2019
影响因子：
5.1
通讯作者：
M. Sawan
中科院分区：
文献类型：
--
作者：
Sreenil Saha;Yuankang Lu;F. Lesage;M. Sawan
我们提出了一种小型化探针的设计，集成硅光电倍增管和光脉冲电子学在一个单一的2 × 2 mm2互补金属氧化物半导体（CMOS）芯片，其中包括功能模块，如快速脉冲激光驱动器和同步单光子检测电路。光子脉冲可以在芯片上计数，也可以由外部高速电子模块（如时间相关单光子计数（TCSPC）单元）处理。将集成电路组装在印刷电路板（PCB）上以及尺寸为1cm的2.5D硅中介层平台上，并与硅光电倍增管（SiPM）、垂直腔表面发射激光器（VCSEL）和其他辅助组件（例如电容器和电阻器）连接。我们的集成光学接口的方法，以优化小的有效面积上的光收集和垂直腔面发射激光器（VSCEL）的光发射，将促进临床采用在许多应用中，并改变景观近红外光谱（NIRS）硬件商业由于显着的光电二极管尺寸减小和消除光纤。
We present the design of a miniaturized probe integrating silicon photomultiplier and light-pulsing electronics in a single 2 × 2 mm2 complementary metal-oxide-semiconductor (CMOS) chip which includes functional blocks such as a fast pulse-laser driver and synchronized single-photon detection circuit. The photon pulses can be either counted on-chip or processed by an external high-speed electronic module such as time-corelated single photon counting (TCSPC) unit. The integrated circuit was assembled on a printed circuit board (PCB) and also on a 2.5D silicon interposer platform of size 1 cm and interfaced with a silicon photomultiplier (SiPM), vertical cavity surface emitting laser (VCSEL) and other ancillary components such as capacitors and resistors. Our approach of integrating an optical interface to optimize light collection on the small active area and light emission from the vertical-cavity surface-emitting laser (VSCEL) will facilitate clinical adoption in many applications and change the landscape of Near Infrared Spectroscopy (NIRS) hardware commercially due to significant optode-size reduction and the elimination of optical fibers.