Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Optics Letters

Single-shot pulse-contrast measurement based onhigh-order quasi-phase-matching cross-correlation

Jingui Ma, Yongzhi Wang, Peng Yuan, Guoqiang Xie, Heyuan Zhu, Liejia Qian

Published Oct 24, 2012• 7 citations
Publisher

Abstract

We propose a novel single-shot pulse-contrast measurement approach based on high-order quasi-phase-matching (QPM) cross correlation. It supports perfect contrast measurement with features of no artifacts, high resolution, and large temporal window. The prototype experiment based on the noncollinear third QPM with a beam crossing angle of 90 deg, using femtosecond Ti:sapphire laser pulses with a contrast of ~10(7), demonstrates an artifacts-free measurement with a temporal window of ~70 ps and a resolution of ~900 fs.

DOI
10.1364/ol.37.004486

Related papers

Single-shot cross-correlation of counter-propagating, short optical pulses using random quasi-phase-matching

Christophe Dorrer, Jessica Shaw

We demonstrate a single-shot cross-correlator based on the transverse sum-frequency generation of counter-propagating pulses in a disordered ferroelectric crystal. It measures the cross-correlation between the two laser pulses, leading to the relative delay between two facilities on every shot for co-timing and study of their relative jitter.

Ultrafast Optics (UFO)•Jan 1, 2023•0 citations

Optical periodic code matching by single-shot broadband frequency-domain cross-correlation

Lev Chuntonov, Zohar Amitay

We introduce and experimentally demonstrate a simple and reliable optical technique for matching between two periodic numerical sequences based on optical single-shot measurement of their broadband cross-correlation function in the frequency domain. Each sequence is optically encoded into the shape of the different broadband femtosecond pulse using pulse-shaping techniques. The two corresponding shaped pulses are mixed in a nonlinear medium together with an additional (amplitude-shaped) narrowband pulse. The spectrum of the resulting four-wave mixing signal is measured to provide the cross-correlation function of the two encoded sequences. For identical sequences it is the auto-correlation function that is being measured, allowing also the identification of the sequence period. The high contrast achieved here between cross-correlation and auto-correlation functions allows to determine with a very high reliability whether the two encoded sequences are identical or not. The demonstrated technique might be employed in an optical implementation of CDMA communication protocol.

arXiv:0910.3626•Optics Express•Aug 3, 2010•0 citations

Time-to-frequency mapping of optical pulses using accelerating quasi-phase-matching

Mor Konsens, Alon Bahabad

An alternative method to characterize the temporal profile of ultrafast pulses is proposed. The scheme, based on frequency conversion with tuned spatiotemporal coupling, does not require a retrieval algorithm and is single-shot based.

Physical Review A•Feb 18, 2016•4 citations

Single-shot Measurement of the Complete Temporal Intensity and Phase of Supercontinuum

Tsz Chun Wong, Michelle A. Rhodes, Rick P. Trebino

We demonstrate the first technique for the complete temporal measurement of a single supercontinuum pulse. We achieve large ranges and high resolutions using polarization gating, a tilted gate pulse, and the cancellation of geometrical smearing.

•Jan 1, 2014•2 citations

Measurement of coherent photon-phonon interaction in solids using the deflection of femtosecond laser pulses

Harald Schulz, F. Kohns, Andreas Scheidt +1 more

Summary form only given. An amplified pulse of a Ti:sapphire femtosecond laser was split into an intense pump and a weak probe pulse. The delay time 7 between pump and probe pulse was adjusted from 0-50 ps in steps of 10 fs. The interaction volume given by the spatial overlap of pump and probe was in the bulk of the sample. Amorphous samples of glass and different single crystals with a typical thickness of 1 mm were used. Measurements with experimental setup A showed a beam scattering according to the degenerate four wave mixing (DFWM) process with fixed scattering angle, independent of the pump pulse intensity and delay time.

Quantum Electronics and Laser Science Conference•Jun 7, 1996•0 citations

Noncollinear parametric fluorescence by chirped quasi-phase matching for monocycle temporal entanglement

Akira Tanaka, Ryo Okamoto, Hwan Hong Lim +9 more

Quantum entanglement of two photons created by spontaneous parametric downconversion (SPDC) can be used to probe quantum optical phenomena during a single cycle of light. Harris [Opt. Express 98, 063602 (2007)] suggested using ultrabroad parametric fluorescenc generated from a quasi-phase-matched (QPM) device whose poling period is chirped. In the Harris's original proposal, it is assumed that the photons are collinearly generated and then spatially separated by frequency filtering Here, we alternatively propose using noncollinearly generated SPDC. In our numerical calculation, to achieve 1.2 cycle temporal correlation for a 532 nm pump laser, only 10% -chirped device is sufficien when noncollinear condition is applied, while a largely chirped (50%) device is required in collinear condition. We also experimentally demonstrate an octave-spanning (790-1610 nm) noncollinear parametric fluorescenc from a 10% chirped MgSLT crystal using both a superconducting nanowire single-photon detector and photomultiplier tube as photon detectors. The observed SPDC bandwidth is 194 THz, which is the largest width achieved to date for a chirped QPM device. From this experimental result, our numerical analysis predicts that the bi-photon can be compressed to 1.2 cycles with appropriate phase compensation.

arXiv:1210.6137•Optics Express•Oct 22, 2012•65 citations
We propose a novel single-shot pulse-contrast measurement approach based on high-order quasi-phase-matching (QPM) cross correlation. It supports perfect contrast measurement with features of no artifacts, high resolution, and large temporal window. The prototype experiment based on the noncollinear third QPM with a beam crossing angle of 90 deg, using femtosecond Ti:sapphire laser pulses with a contrast of ~10(7), demonstrates an artifacts-free measurement with a temporal window of ~70 ps and a resolution of ~900 fs.
We introduce and experimentally demonstrate a simple and reliable optical technique for matching between two periodic numerical sequences based on optical single-shot measurement of their broadband cross-correlation function in the frequency domain. Each sequence is optically encoded into the shape of the different broadband femtosecond pulse using pulse-shaping techniques. The two corresponding shaped pulses are mixed in a nonlinear medium together with an additional (amplitude-shaped) narrowband pulse. The spectrum of the resulting four-wave mixing signal is measured to provide the cross-correlation function of the two encoded sequences. For identical sequences it is the auto-correlation function that is being measured, allowing also the identification of the sequence period. The high contrast achieved here between cross-correlation and auto-correlation functions allows to determine with a very high reliability whether the two encoded sequences are identical or not. The demonstrated technique might be employed in an optical implementation of CDMA communication protocol.
Summary form only given. An amplified pulse of a Ti:sapphire femtosecond laser was split into an intense pump and a weak probe pulse. The delay time 7 between pump and probe pulse was adjusted from 0-50 ps in steps of 10 fs. The interaction volume given by the spatial overlap of pump and probe was in the bulk of the sample. Amorphous samples of glass and different single crystals with a typical thickness of 1 mm were used. Measurements with experimental setup A showed a beam scattering according to the degenerate four wave mixing (DFWM) process with fixed scattering angle, independent of the pump pulse intensity and delay time.
Quantum entanglement of two photons created by spontaneous parametric downconversion (SPDC) can be used to probe quantum optical phenomena during a single cycle of light. Harris [Opt. Express 98, 063602 (2007)] suggested using ultrabroad parametric fluorescenc generated from a quasi-phase-matched (QPM) device whose poling period is chirped. In the Harris's original proposal, it is assumed that the photons are collinearly generated and then spatially separated by frequency filtering Here, we alternatively propose using noncollinearly generated SPDC. In our numerical calculation, to achieve 1.2 cycle temporal correlation for a 532 nm pump laser, only 10% -chirped device is sufficien when noncollinear condition is applied, while a largely chirped (50%) device is required in collinear condition. We also experimentally demonstrate an octave-spanning (790-1610 nm) noncollinear parametric fluorescenc from a 10% chirped MgSLT crystal using both a superconducting nanowire single-photon detector and photomultiplier tube as photon detectors. The observed SPDC bandwidth is 194 THz, which is the largest width achieved to date for a chirped QPM device. From this experimental result, our numerical analysis predicts that the bi-photon can be compressed to 1.2 cycles with appropriate phase compensation.