Diffractive shear interferometry for extreme ultraviolet high-resolution lensless imaging

Jansen, G. S. Matthijs; Beurs, A.C.C. de; Liu, Xiaomeng; Eikema, K.S.E.; Witte, Stefan

doi:10.1364/oe.26.012479

Cited by 19 publications

(27 citation statements)

References 27 publications

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“…A series of far-field diffraction patterns is recorded as a function of the time delay between the HHG pulses. The combination of such sheared illumination with an FTS scan enables spectrally resolved diffractive imaging for the different harmonic wavelengths through diffractive shearing interferometry (DSI) [8]. Note that in the direction opposite to the shearing direction, extra support information is still required.…”

Section: Rotational Diffractive Shearing Interferometrymentioning

confidence: 99%

“…With DSI combined with FTS, it is possible to recover two identical but laterally sheared monochromatic diffraction-plane electric fields from their interference [8]. FTS scans provide (after Fourier transformation with respect to the time delay between the two pulses) such a signal Fig.…”

Section: Diffractive Shearing Interferometrymentioning

confidence: 99%

“…This rotated data forms the starting point for an augmented DSI algorithm, which begins with a starting guess for the unsheared electric field E 0,j (k) for each measurement j at shear angle θ j . The unsheared electric fields are then updated using the standard DSI camera space update [8], but now for each angle θ j :…”

Section: Rotational Diffractive Shearing Interferometrymentioning

confidence: 99%

“…The broad bandwidth of HHG sources enables imaging over wide wavelength spans throughout the extreme ultraviolet and soft-X-ray ranges. Recently we have demonstrated multi-wavelength CDI based on Fourier-transform spectroscopy [8,9], and various promising spectrally resolved imaging results have been reported [10,11].…”

Section: Introductionmentioning

confidence: 99%

“…For our present application we use XUV radiation generated by HHG [18]. In DSI, the interference between two sheared diffraction patterns is measured through spatially resolved Fourier-transform spectroscopy (FTS) [8]. Effectively, this provides a measure of the phase gradient in the direction of the shear [19].…”

Section: Introductionmentioning

confidence: 99%

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Extreme ultraviolet lensless imaging without object support through rotational diversity in diffractive shearing interferometry

Beurs¹,

Liu²,

Jansen³

et al. 2020

Opt. Express

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We report on a method that allows microscopic image reconstruction from extremeultraviolet diffraction patterns without the need for object support constraints or other prior knowledge about the object structure. This is achieved by introducing additional diversity through rotation of an object in a rotationally asymmetric probe beam, produced by the spatial interference between two phase-coherent high-harmonic beams. With this rotational diffractive shearing interferometry method, we demonstrate robust image reconstruction of microscopic objects at wavelengths around 30 nm, using images recorded at only three to five different object rotations.

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Section: Rotational Diffractive Shearing Interferometrymentioning

confidence: 99%

Section: Diffractive Shearing Interferometrymentioning

confidence: 99%

Section: Rotational Diffractive Shearing Interferometrymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Extreme ultraviolet lensless imaging without object support through rotational diversity in diffractive shearing interferometry

Beurs¹,

Liu²,

Jansen³

et al. 2020

Opt. Express

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Toward Complete All-Optical Intensity Modulation of High-Harmonic Generation from Solids

van Essen,

Nie,

de Keijzer

et al. 2024

ACS Photonics

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Optical modulation of high-harmonics generation in solids enables the detection of material properties, such as the band structure, and promising new applications, such as super-resolution imaging in semiconductors. Various recent studies have shown optical modulation of high-harmonics generation in solids, in particular, suppression of high-harmonics generation has been observed by synchronized or delayed multipulse sequences. Here we provide an overview of the underlying mechanisms attributed to this suppression and provide a perspective on the challenges and opportunities regarding these mechanisms. All-optical control of high-harmonic generation allows for femtosecond, and in the future possibly subfemtosecond, switching, which has numerous possible applications: These range from super-resolution microscopy to nanoscale controlled chemistry and highly tunable nonlinear light sources.

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Ultra-broadband diffractive imaging with unknown probe spectrum

Chen,

Gu,

Liu

2024

Light Sci Appl

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Strict requirement of a coherent spectrum in coherent diffractive imaging (CDI) architectures poses a significant obstacle to achieving efficient photon utilization across the full spectrum. To date, nearly all broadband computational imaging experiments have relied on accurate spectroscopic measurements, as broad spectra are incompatible with conventional CDI systems. This paper presents an advanced approach to broaden the scope of CDI to ultra-broadband illumination with unknown probe spectrum, effectively addresses the key challenges encountered by existing state-of-the-art broadband diffractive imaging frameworks. This advancement eliminates the necessity for prior knowledge of probe spectrum and relaxes constraints on non-dispersive samples, resulting in a significant extension in spectral bandwidth, achieving a nearly fourfold improvement in bandlimit compared to the existing benchmark. Our method not only monochromatizes a broadband diffraction pattern from unknown illumination spectrum, but also determines the compressive sampled profile of spectrum of the diffracted radiation. This superiority is experimentally validated using both CDI and ptychography techniques on an ultra-broadband supercontinuum with relative bandwidth exceeding 40%, revealing a significantly enhanced coherence and improved reconstruction with high fidelity under ultra-broadband illumination.

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Diffractive shear interferometry for extreme ultraviolet high-resolution lensless imaging

Cited by 19 publications

References 27 publications

Extreme ultraviolet lensless imaging without object support through rotational diversity in diffractive shearing interferometry

Extreme ultraviolet lensless imaging without object support through rotational diversity in diffractive shearing interferometry

Toward Complete All-Optical Intensity Modulation of High-Harmonic Generation from Solids

Ultra-broadband diffractive imaging with unknown probe spectrum

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