Absolute distance measurement is a fundamental technique in mobile and large-scale
dimensional metrology. Dual-comb ranging is emerging as a powerful tool that exploits …

We present a progress review on the advance of distance measurements made at KAIST by
making use of mode-locked lasers as the light source to meet ever-growing industrial …

Precision positioning of an object relative to a reference point is a common task in many
activities of production engineering. Sensor technologies for single axis measurement …

Laser-based light detection and ranging (lidar) plays a significant role in both scientific and
industrial areas. However, it is difficult for existing lidars to achieve high speed, high …

The ability to determine absolute distance to an object is one of the most basic
measurements of remote sensing. High-precision ranging has important applications in both …

The time-of-flight of light pulses has long been used as a direct measure of distance,, but
state-of-the-art measurement precision using conventional light pulses or microwaves peaks …

We demonstrate a simplified dual-comb LIDAR setup for precision absolute ranging that can
achieve a ranging precision of 2 μm in 140 μs acquisition time. With averaging, the precision …

Laser interferometry serves a fundamental role in science and technology, assisting
precision metrology and dimensional length measurement. During the past decade, laser …

A dual-comb nonlinear asynchronous optical sampling method is proposed to simplify
determination of the time interval and extend the non-ambiguity range in absolute length …

We propose a new approach to multiple-wavelength interferometry, targeted to high
bandwidth absolute distance measurement, with nanometer accuracy over long distances …