通过分发式温度传感器进行低温温度3D映射,分辨率为厘米
Optics express
|November 14, 2024
概括
这项研究展示了使用基于拉曼的分布式温度传感与超导纳米线单光子探测器 (SNSPDs) 的3D冷却温度映射. 该系统达到48K的低传感极限,对于先进的仪器仪表至关重要.
科学领域:
- 物理 物理学 物理
- 材料科学 材料科学 材料科学
- 仪器化 仪器化 仪器化
背景情况:
- 精确的温度监测对于冷应用至关重要.
- 现有的方法可能缺乏复杂的冷环境所需的空间分辨率或灵敏度.
研究的目的:
- 开发和演示用于冷环境的3D分布式温度传感系统.
- 为了实现高空间分辨率的精确温度映射.
主要方法:
- 使用基于拉曼的分布式温度传感器与标准单模光纤.
- 使用极化独立的超导纳米线单光子探测器 (SNSPD).
- 将纤维卷绕在液冷静电机上进行校准和测试.
主要成果:
- 达到低温传感极限为 (48 ± 2) K,低于的沸点.
- 成功地在350厘米2的样本上绘制了冷温度,具有厘米空间分辨率.
- 在冷却过程中监测时间温度梯度演变,采用一分钟的采样.
结论:
- 开发的基于纤维的分布式温度传感系统对3D冷温度绘制非常有效.
- 这项技术在超导,量子计算和航空航天仪器仪表方面有潜在的应用.
- SNSPD的低暗计数率是实现低温传感极限的关键.
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