Since atomically thin two-dimensional (2D) graphene was successfully synthesized in 2004,
it has garnered considerable interest due to its advanced properties. However, the weak …

This article discusses the history of laser radar development in America, Europe, and Asia.
Direct detection laser radar is discussed for range finding, designation, and topographic …

In this paper, we proposed an adjacent frame difference (AFD) method to reconstruct 3-
dimension (3D) images for range-gated flash imaging Lidars. In this novel method, the range …

We present a technique to overcome the depth resolution limitation for 3D active imaging.
Applying microsecond laser pulses and sensor gate width, a scene of several hundred …

Some advanced concepts for gated viewing are presented, including spectral diversity
illumination techniques, non-line-of-sight imaging, indirect scene illumination, and in …

Laser gated viewing is a prominent sensing technology for optical imaging in harsh
environments and can be applied for vision through fog, smoke, and other degraded …

Resolution and sensitivity must be considered in the design of an active imaging system.
System sensitivity is characterized by the signal-to-noise or contrast-to-noise ratio and is …

We present a three-dimensional (3D) imaging method employing linear increasing gain to
encode flying time of photons into intensity information. This method obtains both the …

We present simple illumination devices with built-in speckle reduction using the spatial
diversity approach. These devices are based on a waveguide homogenization technique …

This paper reviews the work that has been done at Fraunhofer IOSB (and its predecessor
institutes) in the past ten years in the area of laser gated-viewing (GV) in the short …