Optical pulse compression to 50 fs by use of only a spatial light modulator for phase compensation

Karasawa, Naoki; Li, Liming; Suguro, Akira; Shigekawa, Hidemi; Morita, Ryuji; Yamashita, Mikio

doi:10.1364/josab.18.001742

Cited by 52 publications

(22 citation statements)

References 18 publications

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“…We previously demonstrated that a SLM phase compensator enables us to compress pulses to sub-5 fs by inputting individual orders of dispersion into a SLM. 1 In this Letter we report, for the f irst time to the best of our knowledge, a 1.56-optical-cycle, 3.4-fs pulse generation through a single hollow fiber and only a programmable SLM by phase feedback with a significantly improved M-SPIDER.…”

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confidence: 88%

Optical pulse compression to 34fs in the monocycle region by feedback phase compensation

et al. 2003

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We compensated for chirp of optical pulses with an over-one-octave bandwidth (495 -1090 nm; center wavelength of 655.4 nm) produced by self-phase modulation in a single argon-filled hollow fiber and generated 3.4-fs, 1.56 optical-cycle pulses (500 nJ, 1-kHz repetition rate). This was achieved with a feedback system combined with only one 4-f phase compensator with a spatial light modulator and a significantly improved phase characterizer based on modified spectral phase interferometry for direct electric-field reconstruction. To the best of our knowledge, this is the shortest pulse in the visible-to-infrared region.

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confidence: 88%

Optical pulse compression to 34fs in the monocycle region by feedback phase compensation

et al. 2003

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“…8,17 Phase shaping has also been used to correct optical aberrations in a beam's wavefront, 18 and in femtosecond pulse shaping where phase compensation can lead to shorter pulse durations. 19 To improve the SLM for experiments demanding better resolution, it may be desirable to obtain a more expensive projector with a higher pixel density LCD. An alternate approach is to expand the laser beam so that it encompasses a larger number of pixels.…”

Section: Graduate Experiments: Holography and Optical Vorticesmentioning

confidence: 99%

A low-cost spatial light modulator for use in undergraduate and graduate optics labs

Huang

Timmers

Roberts

et al. 2012

American Journal of Physics

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Spatial light modulators (SLMs) are a versatile tool for teaching optics, but the cost associated with an SLM setup prevents its adoption in many undergraduate and graduate optics labs. We describe a simple method for creating a low-cost SLM by extracting components from a commercial LCD projector. We demonstrate the pedagogical applications of this SLM design by providing examples of its use in teaching diffraction and interference phenomena. We also discuss an SLM's potential as a research tool in graduate labs. In particular, we demonstrate its use in holography and in the generation of optical vortices.

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“…There have been some experiments reported on ultrabroadband-pulse generation using a silica fiber 1,2) and an Ar-gasfilled hollow fiber, 3) and optical pulse compression by nonlinear chirp compensation. 1,3) For these experiments on generating few-optical-cycle pulses, characterizing the spectral phase of ultrabroad-band pulses analytically as well as experimentally is highly important.…”

Section: Introductionmentioning

confidence: 99%

“…In a recent report, Kalosha and Herrmann considered the linear dispersion with two resonant frequencies and the nonlinear terms without the Raman effect. 6) For the single-cycle pulsegeneration experiment, we must use at least the shortest pulse of 3.4 fs 10) or sub-5 fs 3,11) or 7.1 fs 1) or the commercially available 12 fs pulses. Such a time regime is comparable to the Raman characteristic time of 5 fs 4) in a silica fiber.…”

Section: Introductionmentioning

confidence: 99%

Observation of Slowly Varying Envelope Approximation Breakdown by Comparison between the Extended Finite-Difference Time-Domain Method and the Beam Propagation Method for Ultrashort-Laser-Pulse Propagation in a Silica Fiber

Nakamura

Saeki

Koyamada

2004

Jpn. J. Appl. Phys.

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Conventionally, the beam propagation method (BPM) for solving the generalized nonlinear Schrödinger equation (GNLSE) including the slowly varying envelope approximation (SVEA) has been used to describe ultrashort-laser-pulse propagation in an optical fiber. However, if the pulse duration approaches the optical cycle regime (<10 fs), this approximation becomes invalid. Consequently, it becomes necessary to use the finite difference time domain method (FDTD method) for solving the Maxwell equation with the least approximation. In order to both experimentally and numerically investigate nonlinear femtosecond ultrabroad-band-pulse propagation in a silica fiber, we have extended the FDTD calculation of Maxwell's equations with nonlinear terms to that including all exact Sellmeier-fitting values. We compared the results of this extended FDTD method with the solution of the BPM that includes the Raman response function, which is the same as in the extended FDTD method, up to fifth-order dispersion with the SVEA, as well as with the experimental results for nonlinear propagation of a 12 fs laser pulse in a silica fiber. Furthermore, in only the calculation, pulse width was gradually shortened from 12 fs to 7 fs to 4 fs to observe the breakdown of the SVEA in detail. Moreover, the soliton number N was established as 1 or 2. To the best of our knowledge, this is the first observation of the breakdown of the SVEA by comparison between the results of the extended FDTD and the BPM calculations for the nonlinear propagation of an ultrashort (<12 fs) laser pulse in a silica fiber.

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Optical pulse compression to 50 fs by use of only a spatial light modulator for phase compensation

Cited by 52 publications

References 18 publications

Optical pulse compression to 34fs in the monocycle region by feedback phase compensation

Optical pulse compression to 34fs in the monocycle region by feedback phase compensation

A low-cost spatial light modulator for use in undergraduate and graduate optics labs

Observation of Slowly Varying Envelope Approximation Breakdown by Comparison between the Extended Finite-Difference Time-Domain Method and the Beam Propagation Method for Ultrashort-Laser-Pulse Propagation in a Silica Fiber

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