Abstract Researches on glass welding using tightly focused ultrafast lasers have attracted much attention. However, optical systems with low numerical aperture (NA) in laser material processing are commonly used industry applications. Transmission of two fused silica plates is performed by picosecond irradiation NA this study. The strength under different process parameters such as focal position, pulse energy, and scanning velocity measured. role the modification demonstrated through...

To improve the measurement accuracy of an absolute imaging position encoder, a novel edge detection method is developed to accurately detect edges grating lines based on empirical mode decomposition (EMD). First, according characteristics coding image (APCI), vertical projection grey‐level APCI achieved by conventional transformation. Then, contour decomposed EMD and finite number intrinsic functions (IMFs) are achieved. Next, last two IMFs used describe trend contour. The as adaptive...

To overcome the defects of current absolute optical encoders, a novel linear encoder with imaging position is designed and constructed. Experimental analyses have been made in special test system, experiment results show that has submicron measurement accuracy, well reliability, high image collection frequency lower manufacture cost.

Inverse problem in laser forming involves the heating position planning and determination of parameters. In this study, positions are optimized single curved shapes based on processing efficiency. The algorithm uses a probability function to initialize that is considered be bending points. optimization process minimize total time through adjusting by considering boundary conditions offset distances, minimum angle, distance between two adjacent positions. results compared with those obtained...

The manufacture of micro–nano structures in transparent dielectrics is becoming increasingly important due to the applications medical and biological sciences. femtosecond pulsed laser, with its selectivity, high precision, three-dimensional direct writing nature, an ideal tool for this processing technology. In paper, improved model prediction ablation crater shape fluence threshold laser fused silica presented, which self-trapping excitons electrons' relaxation are involved depict...

We propose an integrated photonic 3D-surface information extractor leveraged by Hilbert dimension squeezing approach, achieving 3D-data surface with 1K resolution @60 FPS and 93% data compression.

Due to its excellent quality, fused silica has been widely used in various industrial applications. The nonlinear absorptive nature of ultrafast laser pulses enables the induction morphological changes within bulk transparent materials. In this study, interior modification is induced by a picosecond pulsed laser, and relationship between processing parameters geometry demonstrated. Three different patterns are identified according geometric characteristics modification. Furthermore, simple...

The morphology of microchannels machined by multiple ultrafast laser pulses with 500 fs and 8 ps durations on fused silica plate is predicted a two-step model experimental validation in present work. A spike structure at crater boundary different scales pulse ablation found the numerical investigation, which could be attributed to diffraction attenuation light intensity both cases. To analyze evolution damaged area an increasing number pulses, distribution intensity, lattice temperature,...

Laser thermal adjustment as an application of laser forming in microsystems attracts much attention. Previous work on the two-bridge actuator (TBA) shows that deformations induced by are limited. In this paper, with three cut-outs including six heating positions is designed to enhance deformation range. A model developed for such introducing factors in-plane and out-of-plane angles TBA's formula, which takes energy constraints into account avoid melting phenomenon negative deformations. The...

Abstract This editorial provides a summary of the topics and papers selected for Special Issue on “optimal operation control smart energy systems”. After undergoing rigorous review process, 10 have been accepted publication. These cover various aspects systems are distributed as follows: strategy resources (two papers), optimal under uncertainties (three defect detection risk evaluation low‐carbon economical papers). The Guest Editorial Board hopes this can provide valuable information...