Dynamic spectroscopic characterization for fast spectral variations based on dual asynchronous undersampling with triple optical frequency combs

Yang, Jianjun; Liu, Jiansheng; Li, Ting; Hu, Jingyuan; Wang, Jingyi; Wu, Yuehan; Xie, Shuguo; Zhao, Xin; Zhang, Zheng

doi:10.1016/j.optlaseng.2022.107077

Cited by 5 publications

(1 citation statement)

References 48 publications

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“…A real-time ranging scheme based on a multi-wavelength tri-comb laser demonstrated an extended ambiguity range to the order of tens of kilometers [125]. A dual-asynchronous sampling scheme based on wavelength-multiplexed tri-comb source has realized the demodulation of fast-varying spectral modulations [126]. It should be noted that these demonstrations had been carried out with marginal increase in system complexity, due to the application of multi-comb fiber lasers.…”

Section: Single-cavity Multi-comb Fiber Lasers and Their Applicationsmentioning

confidence: 99%

Single-cavity dual-comb fiber lasers and their applications

Yang

Zhao²,

Zhang³

et al. 2023

Front. Phys.

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Single-cavity, dual-comb lasers are those specially designed mode-locked lasers that can emit more than one, asynchronous ultrashort pulse trains with stable repetition frequency difference between them. Unlike the long-studied, widely-used femtosecond lasers generating one stable pulse train, systematic investigation on them and their potential dual-comb applications only began, based on the fiber laser platform, around a decade ago, despite sporadic and limited reports of similar lasing phenomena since the beginning of the mode-locked laser studies. From a historic perspective, the birth of this novel technology is the lucky outcome of the timely collision of perpetual search for novel pulsing laser dynamics and concerted pursuit of open-minded solutions for out-of-lab dual-comb systems in the 2010s. In this review article, first, the current schemes to implement single-cavity dual optical frequency comb fiber lasers and their applications are summarized, based on the concept of multiplexed mode-locked lasers. The characteristics of reported single-cavity, dual-comb fiber lasers are discussed as well as their applications in spectroscopy, ranging, Terahertz (THz) spectroscopy, and asynchronous optical sampling (ASOPS). Finally, the more recent development of single-cavity, multi-comb lasers is presented.

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Section: Single-cavity Multi-comb Fiber Lasers and Their Applicationsmentioning

confidence: 99%

Single-cavity dual-comb fiber lasers and their applications

Yang

Zhao²,

Zhang³

et al. 2023

Front. Phys.

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Generation of dual and quad-optical frequency combs in the injected radiation free mode-locked frequency-shifted feedback laser

Mantsevich,

Kostyleva,

Danilin

et al. 2023

Front. Optoelectron.

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The results of an optoelectronic system—frequency-shifted feedback (FSF) laser experimental examination are presented. The considered FSF laser is seeded only with optical amplifier spontaneous emission (ASE) and operates in the mode-locked regime, whereby the output radiation is sequence of short pulses with a repetition rate determined by the delay time in its optical feedback circuit. In the frequency domain, the spectrum of such a pulse sequence is an optical frequency comb (OFC). These OFCs we call initial. We consider the possibility of tunable acousto-optic (AO) dual and quad-comb frequency spacing downconversion in the FSF laser seeded with ASE and operating in the mode-locked regime. The examined system applies a single frequency shifting loop with single AO tunable filter as the frequency shifter that is fed with several radio frequency signals simultaneously. The initial OFCs with frequency spacing of about 6.5 MHz may be obtained in the wide spectral range and their width, envelope shape and position in the optical spectrum may be tuned. The dual-combs are obtained with a pair of initial OFCs aroused by two various ultrasound waves in the acousto-optic tunable filter (AOTF). The dual-combs frequency spacing is determined by the frequency difference of the signals applied to the AOTF piezoelectric transducer and can be tuned simply. The quad-combs are obtained with three initial OFCs, forming a pair of dual-combs, appearing when three ultrasound frequencies feed the AOTF transducer. The quad-combs frequency spacing is defined by the difference between the frequency spacing of dual-combs. Quad-combs with more than 5000 spectral lines and tunable frequency spacing are observed. The successive frequency downconversion gives the possibility to reduce the OFC frequency spacing form several MHz for initial OFC to tens of kHz for quad-combs. Graphical abstract

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A coherent-averaged dual-comb spectrometer based on environment-shared fiber lasers and digital error correction

Liu

et al. 2022

Optics & Laser Technology

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Dynamic spectroscopic characterization for fast spectral variations based on dual asynchronous undersampling with triple optical frequency combs

Cited by 5 publications

References 48 publications

Single-cavity dual-comb fiber lasers and their applications

Single-cavity dual-comb fiber lasers and their applications

Generation of dual and quad-optical frequency combs in the injected radiation free mode-locked frequency-shifted feedback laser

A coherent-averaged dual-comb spectrometer based on environment-shared fiber lasers and digital error correction

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