Optical metrology is one of the key technologies in today's manufacturing industry. In this
article, we provide an insight into optical measurement technologies for precision …

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 …

The field of optical‐frequency‐combs (OFCs) has seen significant progress in recent years
due to the advance of mode‐locked fiber lasers with low‐noise performance and long‐term …

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 …

Frequency-modulated continuous-wave LIDAR (FMCW LIDAR) has been widely used for
both scientific and industrial tools. Here, in this report, a new class of LIDAR technique …

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 …

We developed an all-polarization-maintaining, polarization-multiplexed, dual-comb fiber
laser with a nonlinear amplifying loop mirror (NALM) mode-locking mechanism. Owing to the …

We present an absolute distance measurement system using a phase-stable dual-comb
system with 56.09 MHz repetition rate and 2 kHz repetition rate difference. A relative phase …

A multi-wavelength interferometer utilizing the frequency comb of a femtosecond laser as the
wavelength ruler is tested for its capability of ultra-precision positioning for machine axis …

We experimentally demonstrate a method for absolute distance measurement using a triple-
comb-based multi-heterodyne interferometer which has the capacity to simultaneously …