Spectral shearing interferometer with broad applicability

Wen, Jin; Zhang, Hui; Liu, Juan; Jiao, Zhongxing; Lei, Liang; Lai, Tianshu

doi:10.1364/josab.28.001391

Cited by 7 publications

(8 citation statements)

References 14 publications

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“…We generated the two replica pulses by the SFG of the measured pulse mixed with the pump pulse in a manner similar to that reported in refs. 45,46 . Part of the pump pulse was picked up with a 5% beam splitter mirror set in front of OPA3 and sent to a 4-f zero-dispersion stretcher consisting of a reflective grating, an achromatic lens, and folding mirrors.…”

Section: Methodsmentioning

confidence: 99%

Optical parametric amplification of sub-cycle shortwave infrared pulses

2020

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Few-cycle shortwave infrared (SWIR) pulses are useful tools for research on strong-field physics and nonlinear optics. Here we demonstrate the amplification of sub-cycle pulses in the SWIR region by using a cascaded BBO-based optical parametric amplifier (OPA) chain. By virtue of the tailored wavelength of the pump pulse of 708 nm, we successfully obtained a gain bandwidth of more than one octave for a BBO crystal. The division and synthesis of the spectral components of the pulse in a Mach-Zehnder-type interferometer set in front of the final amplifier enabled us to control the dispersion of each spectral component using an acousto-optic programmable dispersive filter inserted in each arm of the interferometer. As a result, we successfully generated 0.73-optical-cycle pulses at 1.8 μm with a pulse energy of 32 μJ.

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Section: Methodsmentioning

confidence: 99%

Optical parametric amplification of sub-cycle shortwave infrared pulses

2020

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“…1(b), uses a totally different approach to generate narrowband ancillae, which does not rely on interferometric schemes. We produce two nearly monochromatic sheared ancillae by means of a double-slit mask in the Fourier plane of a 4-f zero-dispersion compressor, with a diffraction grating as a dispersive element [11]. The folding in the Fourier plane is obtained by two independent mirrors, one of which is mounted on a high-precision translation stage for the scanning of τ CW and for the application of a static delay between the ancillae to compensate for the potential chirp of the auxiliary pulse.…”

Section: Methodsmentioning

confidence: 99%

“…The precise determination of the spectral shear Ω requires particular care, as evidenced by the introduction of specific techniques based on spectral filtering [10,11] or on consistency checks through multiple shears acquisitions [12,13].…”

Section: Introductionmentioning

confidence: 99%

“…In this paper, we apply to the 2DSI technique the method, originally introduced by Wen et al [11], for the generation of the sheared ancillae by spectral filtering in the Fourier plane of a 4-f zero-dispersion compressor (or 4-f pulse shaper); this approach simultaneously allows for precise selection of the ancillary fields and the direct measurement of their spectra, which removes the uncertainties in the determination of Ω. Hence, in combination with the delay-free 2DSI, it gives direct access to both Ω and τ.…”

Section: Introductionmentioning

confidence: 99%

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Optimized ancillae generation for ultra-broadband two-dimensional spectral-shearing interferometry

et al. 2015

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To overcome the challenges of ancillae preparation in two-dimensional spectrally sheared interferometry, we apply the approach based on spectral filtering in the Fourier plane of a 4-f zero-dispersion compressor, which allows the generation of two sheared and synchronized monochromatic fields. The scheme provides direct and precise measurement of their spectral shear, greatly improving the accuracy and reliability of spectral phase retrieval. By characterizing few-optical-cycle pulses spanning nearly two octaves of bandwidth, we prove the applicability of this method to sub-single-cycle pulses.

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“…Continuous efforts have been made to extend the applicability of this technique such as ZAP-SPIDER [8], SEA-SPIDER [9], CAR-SPIDER [10], SEA-CAR-SPIDER [11], 2DSI [12], Filter-SPIDER [13], Wide-time-range-SPIDER [14]. Our team also experimentally reported a modified technology based on ZAP-SPIDER two years ago [15]. However, these improved SPIDER technology still have some limitations on their application areas.…”

Section: Introductionmentioning

confidence: 99%