Laser-radar-based three-dimensional sensor for teaching robot paths

Maekynen, Anssi Jaakko; Kostamovaara, J.; Myllylae, Risto A.

doi:10.1117/12.208080

Cited by 9 publications

(1 citation statement)

References 2 publications

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“…[20,26,75], bead position and stiffness determination of optical traps [76][77][78]. QPDs also have been used to detect position in light detection and ranging (LIDAR), robotics [79], inter-satellite communication [80], and laser space communication [81].…”

Section: Position Sensitive Detector (Psd) Based Detectionmentioning

confidence: 99%

Optical direct detection of thermal vibrations of ultralow stiffness micro-nano structures.

Chowdhury¹

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knowledge and experience. They have been a true support group during tough times. This research work would have been much more difficult without their support. I cannot thank enough Pranoy Deb Shuvra, for being an extraordinary friend, over the last 15 years. Many thanks to Anam Chandra Paul and Abdullah Al Mamun for supporting me countless times. Finally, I want to thank my parents Sre Jagadish Chowdhury and Rathna Rani Devi for their endless support, patience and guidance.

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Section: Position Sensitive Detector (Psd) Based Detectionmentioning

confidence: 99%

Optical direct detection of thermal vibrations of ultralow stiffness micro-nano structures.

Chowdhury¹

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Two-dimensional displacement sensors with angstrom-scale resolution based on optical slot antenna arrays

Zhang

et al. 2022

APL Photonics

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Optical displacement sensing with a high resolution and noncontact detection plays an important role in nanometrology, nanofabrication, and super-resolution microscopy. However, displacement sensing along an arbitrary direction in a two-dimensional (2D) plane with angstrom-level precision remains challenging. Here, we propose a 2D displacement sensor composed of eight optical slot antennas. A tightly focused laser beam is illuminated upon the antennas. The amplitudes and phases of the output radiations of the antennas are controlled by geometries. The intensity distribution of the output far-field radiation, which strongly depends on the relative position between the focal spot of the incident light and the antennas, was used to retrieve the 2D coordinates of any location in a plane. A resolution as high as 0.88 nm was obtained. We also show a method for improving displacement sensitivity by designing the destructive interference among the radiations of the antennas. The angstrom-scale resolution and arbitrary point localization, along with the nanoscale size, pave the way for the development of high-performance sensing, integrated photonic circuits, and on-chip signal processing.

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An infrared target searching gyrator for robot calibration

Zhang

Larsson²

1997 8th International Conference on Advanced Robotics. Proceedings. ICAR'97

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A position measuring system has been developed for robot calibration. The system is essentially a mechatronic gyrator which continuously rotates to take sighting shots of infrared emitters and obtain the azimuth and elevation angles. This occurs whenever the gyrator is in a position to let the beam from one of the emitters pass through one of the slots in the gyrator to a photo sensor. The relative positions between the gyrator and the emitters can then be determined by triangulation. The gyrator is a compact, single station device which can perform 6 DOF measurement of the robot end effector by using a element target.

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Laser-radar-based three-dimensional sensor for teaching robot paths

Cited by 9 publications

References 2 publications

Optical direct detection of thermal vibrations of ultralow stiffness micro-nano structures.

Optical direct detection of thermal vibrations of ultralow stiffness micro-nano structures.

Two-dimensional displacement sensors with angstrom-scale resolution based on optical slot antenna arrays

An infrared target searching gyrator for robot calibration

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