Advanced Optical Metrology Using Ultrashort Pulse Lasers

Kim, Seungwoo; Kim, Young‐Jin

doi:10.2184/lsj.36.1254

Cited by 6 publications

(3 citation statements)

References 9 publications

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“…While on the one hand, pulse compression represents a nice functionality for developing fully integrated on-chip systems in the long run, on the other hand, spectral broadening mechanism underlying SCG, such as high order soliton dynamics and SPM, are involved in the compression of optical pulses, as will be discussed below. Finally, beyond its use for and link with SCG, pulse compression finds applications in many fields like metrology [ 170 , 183 ], biology [ 184 ], optical communication [ 185 ] and high harmonic generation toward UV or soft X-ray frequency [ 186 , 187 ], and to study physical mechanisms at the attosecond time-scale.…”

Section: Applications Of Chip-based Supercontinuummentioning

confidence: 99%

Supercontinuum in integrated photonics: generation, applications, challenges, and perspectives

et al. 2023

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Frequency conversion in nonlinear materials is an extremely useful solution to the generation of new optical frequencies. Often, it is the only viable solution to realize light sources highly relevant for applications in science and industry. In particular, supercontinuum generation in waveguides, defined as the extreme spectral broadening of an input pulsed laser light, is a powerful technique to bridge distant spectral regions based on single-pass geometry, without requiring additional seed lasers or temporal synchronization. Owing to the influence of dispersion on the nonlinear broadening physics, supercontinuum generation had its breakthrough with the advent of photonic crystal fibers, which permitted an advanced control of light confinement, thereby greatly improving our understanding of the underlying phenomena responsible for supercontinuum generation. More recently, maturing in fabrication of photonic integrated waveguides has resulted in access to supercontinuum generation platforms benefiting from precise lithographic control of dispersion, high yield, compact footprint, and improved power consumption. This Review aims to present a comprehensive overview of supercontinuum generation in chip-based platforms, from underlying physics mechanisms up to the most recent and significant demonstrations. The diversity of integrated material platforms, as well as specific features of waveguides, is opening new opportunities, as will be discussed here.

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Section: Applications Of Chip-based Supercontinuummentioning

confidence: 99%

Supercontinuum in integrated photonics: generation, applications, challenges, and perspectives

et al. 2023

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“…Various interferometers have been proposed to perform long-distance measurement, which is required in many areas of industry for the production and safety evaluation of large, highaccuracy equipment [1]. Recently, optical frequency combs are used in many measurement systems because of its high frequency-stability and high accuracy, which is traceable to the definition of second [2].…”

Section: Introductionmentioning

confidence: 99%

Space position measurement using long-path heterodyne interferometer with optical frequency comb

et al. 2012

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A heterodyne interference system was developed for position measurement. A stabilized optical-frequency comb is used as the laser source. The preliminary experiment to measure a distance of 22.478 m shows a drift of 1.6 μm in 20 minutes after the temperature compensation. Comparison and frequency shift experiments have been done for a distance of about 7.493 m. The experimental results show that the drift is mainly caused by environmental condition changes and the vibration of the table and floor also has some effects. It was verified that the absolute distance measurement can be realized by fringe scanning and frequency-shifting methods.

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“…[4][5][6] When performing in situ long-distance measurements, conventional interferometers are affected by air turbulence and mechanical vibration, and therefore, are not easy to apply. However, an optical frequency comb can be used directly as the light source of a long-path interferometer, [7][8][9][10][11][12][13][14][15][16] and this has prompted various research efforts to develop new distance measurement devices.…”

mentioning

confidence: 99%

Absolute Measurement of Baselines up to 403 m Using Heterodyne Temporal Coherence Interferometer with Optical Frequency Comb

Matsumoto

Wang

Takamasu

et al. 2012

Appl. Phys. Express

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A heterodyne interference system is developed for baseline measurement by using an acoustic optical modulator and an optical frequency comb stabilized by a rubidium atomic clock. Temporal coherence interference occurs at discrete spatial positions, when two pulse trains overlap. An optical delay of the interferometer with a piezoelectric transducer is created to determine the peak positions of the interference fringe patterns, and the absolute distance is obtained at a high resolution of several tens of nanometers. The experimental results at baseline distances up to 403.2 m show a high reproducibility of about 6 m.

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Advanced Optical Metrology Using Ultrashort Pulse Lasers

Cited by 6 publications

References 9 publications

Supercontinuum in integrated photonics: generation, applications, challenges, and perspectives

Supercontinuum in integrated photonics: generation, applications, challenges, and perspectives

Space position measurement using long-path heterodyne interferometer with optical frequency comb

Absolute Measurement of Baselines up to 403 m Using Heterodyne Temporal Coherence Interferometer with Optical Frequency Comb

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