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Chin. Opt. Lett.
Research Highlights
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Compressed sensing in synthetic aperture photoacoustic tomography based on a linear array ultrasound transducer

Photoacoustic tomography (PAT) has the unique capability of visualizing optical absorption inside several centimeters-deep biological tissue with a high spatial resolution. However, single linear-array transducer-based PAT suffers from the limited-view challenge, and thus the synthetic aperture configuration is designed that still requires multichannel data acquisition hardware. Herein, a feasible...
Influence of laser contrast on high-order harmonic generation from solid-density plasma surfaces

The influence of laser temporal contrast on high-order harmonic generation from intense laser interactions with solid-density plasma surfaces is experimentally studied. A switchable plasma mirror system is set up to improve the contrast by two orders of magnitude at 10 ps prior to the main peak. By using the plasma mirror and tuning the prepulse, the dependence of high-order harmonic generation on...
Intense keV IAP generation by orthogonally polarized multicycle midinfrared two-color laser fields

We theoretically investigate the attosecond pulse generation in an orthogonal multicycle midinfrared two-color laser field. It is demonstrated that multiple continuum-like humps, which consist of about twenty orders of harmonics and an intensity of about one order higher than the adjacent normal harmonics, are generated when longer wavelength driving fields are used. By filtering these humps, inte...
Gradation representation method using a binary-weighted computer-generated hologram based on pulse-width modulation

We propose a simple gradation representation method using a binary-weighted computer-generated hologram (CGH) to be displayed on a high-speed spatial light modulator that can be controlled by the pulse-width modulation technique. The proposed method uses multiple bit planes comprising binary-weighted CGHs with various pulse widths. The object points of a three-dimensional (3D) object are assigned ...
Announcements
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Cover Story: Novel method for diagnosis of early-stage lung cancer: using metamaterials THz sensors [17/10/2017]

Currently, lung cancer has become one of the leading causes of cancerdeath. In many cases, the lung cancer has already spread beyond the originalsite by the time the patients have symptoms and seek medical attention. Themain reason i...
COL Cover Story: Compressed sensing in synthetic aperture photoacoustic tomography based on a linear array ultrasound transducer [09/10/2017]

Photoacoustictomography (PAT) is a noninvasive and non-ionizing hybrid biomedical imagingmodality, which has the unique capability of visualizing optical absorptioninside the several centimeters deep biological tissue with high acous...
Feature Issue Announcement:Advances in Metasurfaces [31/08/2017]

Chinese OpticsLetters (COL) invites original manuscriptsubmissions for a Special Issue on Advancesin Metasurfaces to be publishedin May 2018. Metasurface refers to a type of artificial thin film materialswith sub-wavelength featu...
COL Cover Story: Plasma Mirror: An Effective System for High-order Harmonic Generation [08/08/2017]

Generation of light pulses with shorter duration for diagnosing and controlling the ultrafast processes in microcosm has been a subject of strong scientific interest. Femtosecond laser pulses can be extensively produced by the self-m...
COL Cover Story: A new scheme of generating intense keV isolated attosecond pulses [30/06/2017]

The generation of intense isolated attosecond pulses (IAPs) covering the keV regime has become a hot topic at present due to their practical applications such as biological imaging, X-ray diffraction, attosecond pump-probe dynamics. ...
COL Cover Story: Gradation representation method using a binary-weighted computer-generated hologram based on pulse-width modulation [09/06/2017]

Holography can directly record and faithfully reconstruct a three-dimensional (3D) image. A computer-generated hologram (CGH) is a holographic interference pattern obtained by calculating the light propagated from a 3D object using a...
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