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The MMT Adaptive optics exoPlanet characterization System (MAPS) is currently in its engineering phase, operating on-sky at the MMT Telescope on Mt. Hopkins in southern Arizona. The MAPS Adaptive Secondary Mirror's actuators are controlled…

We report the development of a multichannel microscopy for whole-slide multiplane, multispectral, and phase imaging. We use trinocular heads to split the beam path into 6 independent channels and employ a camera array for parallel data…

Instrumentation and Detectors · Physics 2017-08-24 Jun Liao , Zhe Wang , Zibang Zhang , Zichao Bian , Kaikai Guo , Aparna Nambiar , Yutong Jiang , Shaowei Jiang , Jingang Zhong , Michael Choma , Guoan Zheng

We propose an approach to assess the synchronization of rigidly mounted sensors based on their rotational motion. Using function similarity measures combined with a sliding window approach, our approach is capable of estimating time-varying…

Robotics · Computer Science 2024-10-01 Thomas Wodtko , Alexander Scheible , Michael Buchholz

We report on a design of a compact laser system composed of an extended cavity diode laser with high passive stability and a pre-filter Fabri-Perot cavity. The laser is frequency stabilized relative to the cavity using a serrodyne technique…

Quantum Gases · Physics 2015-05-20 Emil Kirilov , Manfred J. Mark , Maximilian Segl , Hanns-Christoph Nägerl

Coherent control of a system involves steering an interaction to a final coherent state by controlling the phase of an applied field. Plasmas support coherent wave structures that can be generated by intense laser fields. Here, we…

Plasma Physics · Physics 2015-06-02 Z. -H. He , B. Hou , V. Lebailly , J. A. Nees , K. Krushelnick , A. G. R. Thomas

Detecting small obstacles on the road ahead is a critical part of the driving task which has to be mastered by fully autonomous cars. In this paper, we present a method based on stereo vision to reliably detect such obstacles from a moving…

Computer Vision and Pattern Recognition · Computer Science 2016-09-16 Peter Pinggera , Sebastian Ramos , Stefan Gehrig , Uwe Franke , Carsten Rother , Rudolf Mester

This paper presents a novel visual-LiDAR odometry and mapping method with low-drift characteristics. The proposed method is based on two popular approaches, ORB-SLAM and A-LOAM, with monocular scale correction and visual-bootstrapped LiDAR…

Computer Vision and Pattern Recognition · Computer Science 2023-07-11 Hanyu Cai , Ni Ou , Junzheng Wang

This paper aims to improve the performance and positioning accuracy of a robot by using the particle filter method. The laser range information is a wireless navigation system mainly used to measure, position, and control autonomous robots.…

Robotics · Computer Science 2021-10-29 Rashid Ali , Dil Nawaz Hakro , Yongping He , Wenpeng Fu , Zhiqiang Cao

We present a conceptual design for a fiber positioning system for multi-object high-resolution spectroscopy, designed to be compatible with the upcoming large telescopes with a wide field of view. The design incorporates multiple…

Instrumentation and Methods for Astrophysics · Physics 2025-09-23 Manjunath Bestha , T. Sivarani , Arun Surya , Sudharsan Yadav , Athira Unni , Parvathy M , Devika Divakar , S. Sriram , Ajin Prakash , Amirul Hasan

The autonomous driving industry is experiencing unprecedented growth, driven by rapid advancements in technology and increasing demand for safer, more efficient transportation. At the heart of this revolution are two critical factors:…

Robotics · Computer Science 2024-09-17 Harshit Jain , Priyal Babel

We demonstrate that deep reinforcement learning (deep RL) provides a highly effective strategy for the control and self-tuning of optical systems. Deep RL integrates the two leading machine learning architectures of deep neural networks and…

Signal Processing · Electrical Eng. & Systems 2020-06-11 Chang Sun , Eurika Kaiser , Steven L. Brunton , J. Nathan Kutz

Acousto-optic deflectors (AOD) enable spatiotemporal control of laser beams through diffraction at an ultrasonic grating that is controllable by radio-frequency (rf) waveforms. These devices are a widely used tool for high-bandwidth…

Optics · Physics 2025-12-19 Marcel Mittenbuehler , Lukas Sturm , Malte Schlosser , Gerhard Birkl

In this paper, we present INertial Lidar Localisation Autocalibration And MApping (IN2LAAMA): an offline probabilistic framework for localisation, mapping, and extrinsic calibration based on a 3D-lidar and a 6-DoF-IMU. Most of today's…

Robotics · Computer Science 2020-10-23 Cedric Le Gentil , Teresa Vidal-Calleja , Shoudong Huang

LiDAR-camera fusion is one of the core processes for the perception system of current automated driving systems. The typical sensor fusion process includes a list of coordinate transformation operations following system calibration.…

Robotics · Computer Science 2023-11-09 Dan Shen , Zhengming Zhang , Renran Tian , Yaobin Chen , Rini Sherony

Synchronised laser oscillators are essential for probing the fastest processes in chemistry, materials science, and biology down to atto-second timescales. Tight synchronisation is also crucial at scientific facilities such as free-electron…

Hyper-redundant robots offer high dexterity, making them good at operating in confined and unstructured environments. To extend the reachable workspace, we built a multi-segment flexible rack actuated planar robot. However, the compliance…

Robotics · Computer Science 2026-03-12 Yuli Song , Wenbo Li , Wenci Xin , Zhiqiang Tang , Daniela Rus , Cecilia Laschi

A precise synchronization between laser pulse and electron beam arrival time is essential for achieving sub-picosecond stability in modern accelerator facilities. In this work, a Low-Level RF system architecture combined with White Rabbit…

We introduce LiDAR-UDA, a novel two-stage self-training-based Unsupervised Domain Adaptation (UDA) method for LiDAR segmentation. Existing self-training methods use a model trained on labeled source data to generate pseudo labels for target…

Computer Vision and Pattern Recognition · Computer Science 2023-09-26 Amirreza Shaban , JoonHo Lee , Sanghun Jung , Xiangyun Meng , Byron Boots

The wavefront measurement of a light beam is a complex task, which often requires a series of spatially resolved intensity measurements. For instance, a detector array may be used to measure the local phase gradient in the transverse plane…

Off-axis digital holography is used to align a few-mode fiber to a multi-mode fiber in a free-space optical setup. Alignment based on power coupling measurements alone cannot guarantee low mode-dependent loss. The proposed alignment method…

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