Traditional optical imaging systems can provide high-quality with a complicated and expensive design by eliminating aberrations. With the help of an memory effect, rather than independently improving single parameter, simultaneous improvement several parameters adding scattering media to is, best our knowledge, demonstrated for first time. As example, in simple lens system, addition depth field...

Optical coherence tomography (OCT) has become a novel approach to noninvasive imaging in the past three decades, bringing significant potential biological research and medical biopsy situ , particularly three-dimensional (3D) vivo conditions. Specifically, OCT systems using broad bandwidth sources, mainly centered at near-infrared-II, allow significantly higher depth, as well maintain high-reso...

Mobile-phones have facilitated the creation of field-portable, cost-effective imaging and sensing technologies that approach laboratory-grade instrument performance. However, the optical imaging interfaces of mobile-phones are not designed for microscopy and produce spatial and spectral distortions in imaging microscopic specimens. Here, we report on the use of deep learning to correct such dis...

An optical imaging probe with targeted multispectral and spatiotemporal illumination features has applications in many diagnostic biomedical studies. However, these systems are mostly adapted in conventional microscopes, limiting their use for in vitro applications. We present a variable resolution imaging probe using a digital micromirror device (DMD) with an achievable maximum lateral resolut...

We propose a new scanhead design for combined ultrasound (US)/photoacoustic (PA) imaging that can be applied to dual-modality microscopy and biomedical imaging. Both imaging modalities employ the optical generation and detection of acoustic waves. The scanhead consists of an optical fiber with an axicon tip for excitation, and a microring for acoustic detection. No conventional piezoelectric de...

Terahertz technologies recently emerged as outstanding candidates for a variety of applications in such sectors as security, biomedical, pharmaceutical, aero spatial, etc. Imaging the terahertz field, however, still remains a challenge, particularly when sub-wavelength resolutions are involved. Here we demonstrate an all-optical technique for the terahertz near-field imaging directly at the sou...

We demonstrate a novel multifunctional optical system that is capable of trapping, imaging, position sensing, and fluorescence detection of micrometer-sized fluorescent test particles using hollow-core photonic crystal fiber (HC-PCF). This multifunctional optical system for trapping, position sensing, and fluorescent detection is designed such that a near-IR laser light is used to create an opt...

Several application, like frequency chirped lidarradar system, opticdwireless communications and biomedical imaging, require optical transmitters that can generate rapidly tunable, low phase noise and low intensity noise millimeter wave sub-carriers. Using an electro-optic Nd:LiNbOJ microchip laser in an optical heterodyning scheme, we designed a simple, robust, monolithic and low-cost optical ...

We review the field of femtosecond pulse shaping, in which Fourier synthesis methods are used to generate nearly arbitrarily shaped ultrafast optical wave forms according to user specification. An emphasis is placed on programmable pulse shaping methods based on the use of spatial light modulators. After outlining the fundamental principles of pulse shaping, we then present a detailed discussio...