This paper proposes a detection electronics which enables ultimate suppression of leakage signals in high-speed and phase-sensitive laser probe for radio frequency surface and bulk acoustic wave devices. Another merit is simpler circuit configuration than the conventional one. First, the complete suppression of leakage signals is verified. Then impact of the oscillator phase noise is examined by utilizing oscillators with various phase noise performance. This is because the proposed electronics is expected to be more sensitive to the oscillator phase noise than the conventional one. The result indicates that although performance degradation appears, it is practically negligible. In this electronics, the absolute phase can not be determined. This is not a demerit for use in the laser probe because additional phase shift caused by cables and printed circuit board is hard to calibrate.

本文提出了一种检测电子器件，它能够在用于射频表面和体声波器件的高速和相敏激光探头中最终抑制泄漏信号。另一个优点是比传统的电路配置更简单。首先，验证对泄漏信号的完全抑制。然后通过使用具有各种相位噪声性能的振荡器来检查振荡器相位噪声的影响。这是因为预计所提出的电子设备比传统的电子设备对振荡器相位噪声更敏感。结果表明，虽然出现性能下降，但实际上可以忽略不计。在此电子设备中，无法确定绝对相位。