A 1024 x 8, 700-ps Time-Gated SPAD Line Sensor for Planetary Surface Exploration With Laser Raman Spectroscopy and LIBS
A 1024 x 8, 700-ps Time-Gated SPAD Line Sensor for Planetary Surface Exploration With Laser Raman Spectroscopy and LIBS
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DOI：
10.1109/jssc.2013.2282091
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发表时间：
2014-01-01
影响因子：
5.4
通讯作者：
Charbon, Edoardo
中科院分区：
文献类型：
--
作者：
Maruyama, Yuki;Blacksberg, Jordana;Charbon, Edoardo
提出了一种用于时间分辨激光拉曼光谱和激光诱导击穿光谱的1024×8时间选通单光子雪崩二极管线传感器。实现了两种不同的芯片几何结构并对其进行了表征。I型传感器的最大光子探测效率为0.3%，在3V的过量偏压下，中位数暗计数率为80赫兹。第二类传感器的最大光子探测效率为19.3%，在3V的过量偏压下，中位数暗计数率为5.7 kHz。这两种芯片都具有250ps的时间分辨率和快速选通能力，第一类最小栅宽为1.8 ns，第二类最小栅宽为0.7 ns。成功地观测到了方解石和硅锌矿等天然矿物的拉曼光谱。随着亚纳秒门的使用，背景荧光显著降低。
A 1024 x 8 time-gated, single-photon avalanche diode line sensor is presented for time-resolved laser Raman spectroscopy and laser-induced breakdown spectroscopy. Two different chip geometries were implemented and characterized. A type-I sensor has a maximum photon detection efficiency of 0.3% and median dark count rate of 80 Hz at 3 V of excess bias. A type-II sensor offers a maximum photon detection efficiency of 19.3% and a median dark count rate of 5.7 kHz at 3 V of excess bias. Both chips have 250-ps temporal resolution and fast gating capability, with a minimum gate width of 1.8 ns for type I and 0.7 ns for type II. Raman spectra were successfully observed from natural minerals, such as calcite and willemite. With the use of subnanosecond gating, background fluorescence was significantly reduced.