Hybrid Dispersion Laser Scanner

Goda, Keisuke; Mahjoubfar, Ata; Wang, Chao; Fard, Ali; Adam, Jost; Gossett, Daniel R.; Ayazi, Ali; Sollier, Elodie; Malik, Omer; Chen, E.; Liu, Yahui; Brown, R D H; Sarkhosh, Niusha; Carlo, Dino Di; Jalali, Bahram

doi:10.1038/srep00445

Cited by 86 publications

(56 citation statements)

References 38 publications

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“…Recently, a novel ultrafast imaging technique, serial time-encoded amplified microscopy (STEAM), was proposed [3][4][5][6] . In the STEAM technique, a broadband optical pulse is first spatially dispersed in free space for space-to-wavelength mapping to record the spatial pattern of an object into the spectrum.…”

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confidence: 99%

“…Therefore, it works in the dark field, and no high-intensity illumination is needed [8] . Furthermore, the STEAM technique can be developed into various modalities for different kinds of realtime measurements, including web inspection [9] , vibration detection [4] , three-dimensional profile measurements [10] , optical coherence tomography (OCT) [11] , displacement sensing [12] , and real-time spectroscopy [13,14] . In the STEAM technique, the group velocity dispersion (GVD) for optical pulse stretching before detection has great influence over the spatial resolution.…”

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confidence: 99%

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Power efficiency of time-stretch imaging system by using parallel interleaving detection

Dai

Yin

et al. 2016

中国光学快报

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A 38.88 MHz time-stretch line-scan imaging system with parallel interleaving detection is experimentally demonstrated. Since only half-chromatic dispersion is used to stretch optical pulses for wavelength-to-time mapping, the power efficiency is significantly improved by 6.5 dB. Furthermore, the theoretical analysis indicates that the power loss can be efficiently reduced for scan rates less than 100 MHz. In addition, a mathematical model for signal-to-noise evaluation is derived, including amplified spontaneous emission noise in the power compensation. Thanks to the improvement of the power efficiency by using parallel interleaving detection, the signal quality is enhanced.

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confidence: 99%

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confidence: 99%

Power efficiency of time-stretch imaging system by using parallel interleaving detection

Dai

Yin

et al. 2016

中国光学快报

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“…Although successfully applied in the areas such as time-stretch microscope [15], ultrafast spectroscope [17], and optical coherence tomography (OCT) [18][19][20][21][22], it is largely under-explored as ultrastable swept sources, particularly in terms of sweeping bandwidth and stability. In this regard, recently several works have devoted to the speed improvement of the swept source through optical time-stretch technique, particularly in the wavelength windows of 800 nm [23,24] and 1550 nm [25,26]. We also proposed a stable 11.5-MHz breathing laser as inertia-free swept source (BLISS) and achieved a sweep range of ~60 nm in the 1550-nm window [27], which was benefitted from the dispersion engineering [28,29].…”

Section: Introductionmentioning

confidence: 99%

28 MHz swept source at 10 μm for ultrafast quantitative phase imaging

Wei¹,

Lau²,

Xu³

et al. 2015

Biomed. Opt. Express

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Emerging high-throughput optical imaging modalities, in particular those providing phase information, necessitate a demanding speed regime (e.g. megahertz sweep rate) for those conventional swept sources; while an effective solution is yet to be demonstrated. We demonstrate a stable breathing laser as inertia-free swept source (BLISS) operating at a wavelength sweep rate of 28 MHz, particularly for the ultrafast interferometric imaging modality at 1.0 μm. Leveraging a tunable dispersion compensation element inside the laser cavity, the wavelength sweep range of BLISS can be tuned from ~10 nm to ~63 nm. It exhibits a good intensity stability, which is quantified by the ratio of standard deviation to the mean of the pulse intensity, i.e. 1.6%. Its excellent wavelength repeatability, <0.05% per sweep, enables the single-shot imaging at an ultrafast line-scan rate without averaging. To showcase its potential applications, it is applied to the ultrafast (28-MHz line-scan rate) interferometric time-stretch (iTS) microscope to provide quantitative morphological information on a biological specimen at a lateral resolution of 1.2 μm. This fiber-based inertia-free swept source is demonstrated to be robust and broadband, and can be applied to other established imaging modalities, such as optical coherence tomography (OCT), of which an axial resolution better than 12 μm can be achieved. Y. Wong, and K. K. Tsia, "Interferometric time-stretch microscopy for ultrafast quantitative cellular and tissue imaging at 1 μm," J.

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“…Serial time-encoded amplified microscopy (STEAM), which adopts the unique mapping from the spatial information (image) to a serial time-domain data stream using chromatic and spatial dispersion with high-speed single-pixel detection, has enabled ultrafast unprecedented imaging speed of tens of millions frames per second [1]. STEAM technology has been successfully applied in ultrafast laser scanning [2] and flowing particle screening [3], showing great potential in real-time high-throughput and highly sensitive measurements [4].…”

Section: Introductionmentioning

confidence: 99%