Attosecond-precision balanced timing detector with a single photodiode.

Area of Science:

• Optoelectronics
• Precision Measurement

Background:

• Accurate timing is crucial for metrology and synchronization.
• Existing timing detectors often suffer from electronic noise limitations.

Purpose of the Study:

• To develop a novel and practical timing detector.
• To achieve balanced detection with reduced electronic noise.
• To improve timing jitter performance.

Main Methods:

• Utilized a double-pass acousto-optic frequency shifter.
• Employed time and frequency multiplexing for balanced detection.
• Used a single photodiode for reduced electronic noise.

Main Results:

• Achieved a detection floor of 28.3 zs/√Hz at 1.4 mW input power.
• Reduced integrated timing jitter from 99.0 as to 30.4 as (1 kHz–1 MHz).
• Maintained 221.4 zs/√Hz detection floor and 268.0 as jitter at 50 µW input power.

Conclusions:

• The developed timing detector offers high precision and low noise.
• It is suitable for applications in metrology, ranging, and synchronization.
• Demonstrates a significant advancement in timing detection technology.