采用光纤组件组装的笔记本电脑光热反射测量仪。

Yarai Atsushi, Nakanishi Takuji

Department of Electronics, Information, and Communication Engineering, Faculty of Engineering, Osaka Sangyo University, 3-1-1 Nakagaito, Daito, Osaka 574-8530, Japan.

Rev Sci Instrum. 2007 May;78(5):054903. doi: 10.1063/1.2736414.

In this article, we propose a laptop photothermal reflectance measurement instrument assembled with optical fiber components. The primary feature of this instrument is that all of the optical routes for the pumping and probing beams, as well as the beam sources using a laser diode, are composed of optical fiber and optical fiber components. With this configuration, the problems related to the technical shortcomings of the conventional instrument can be solved completely. Our proposed instrument is also appropriate for in situ measurement of the thermoproperties of thin film. The dimensions of our instrument's case are 400 mm wide, 250 mm deep, and 60 mm tall, and its weight is approximately 1 kg, containing the power supply for driving the laser diode of the pumping beam and electronics for the detection of photothermal reflectance. These are at least 120 and 150 smaller than the volume and weight of the conventional commercial instrument, respectively. Nevertheless, it is only necessary to prepare a synchronous detection instrument for signal recovery (e.g., lock-in amplifier) with our instrument. To evaluate our instrument's thermoproperty measurement capability, we measured the thermal diffusivity and thermal conductivity of Au thin film. The thermal diffusivity of 1.5-microm-thick Au film measured by our instrument matched previously reported values within a margin of error of a few percent.

在本文中，我们提出了一种用光纤组件组装的笔记本电脑光热反射测量仪器。该仪器的主要特点是，泵浦光束和探测光束的所有光路，以及使用激光二极管的光束源，均由光纤和光纤组件组成。采用这种配置，可以完全解决与传统仪器技术缺陷相关的问题。我们提出的仪器也适用于薄膜热性能的原位测量。我们仪器外壳的尺寸为宽400毫米、深250毫米、高60毫米，重量约为1千克，其中包括用于驱动泵浦光束激光二极管的电源和用于检测光热反射率的电子设备。这些尺寸和重量分别比传统商用仪器的体积和重量至少小120倍和150倍。然而，使用我们的仪器只需要准备一个用于信号恢复的同步检测仪器（例如锁相放大器）。为了评估我们仪器的热性能测量能力，我们测量了金薄膜的热扩散率和热导率。我们的仪器测量的1.5微米厚金膜的热扩散率与先前报道的值在百分之几的误差范围内相符。