Laser-induced damage studies in optical elements using X-ray laser interferometric microscopy

2009 ◽  
Author(s):  
D. Margarone ◽  
M. Kozlova ◽  
J. Nejdl ◽  
B. Rus ◽  
T. Mocek ◽  
...  
Keyword(s):  
Optical Elements ◽  
X Ray ◽  
Laser Induced Damage ◽  
Laser Interferometric

scholarly journals High laser induced damage threshold photoresists for nano-imprint and 3D multi-photon lithography

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Elmina Kabouraki ◽  
Vasileia Melissinaki ◽  
Amit Yadav ◽  
Andrius Melninkaitis ◽  
Konstantina Tourlouki ◽  
...  
Keyword(s):  
Nanoimprint Lithography ◽  
Three Dimensional ◽  
Damage Threshold ◽  
Laser Pulses ◽  
Intense Laser ◽  
Optical Elements ◽  
Photonic Circuits ◽  
Future Production ◽  
Intense Laser Pulses ◽  
Laser Induced Damage

Abstract Optics manufacturing technology is predicted to play a major role in the future production of integrated photonic circuits. One of the major drawbacks in the realization of photonic circuits is the damage of optical materials by intense laser pulses. Here, we report on the preparation of a series of organic–inorganic hybrid photoresists that exhibit enhanced laser-induced damage threshold. These photoresists showed to be candidates for the fabrication of micro-optical elements (MOEs) using three-dimensional multiphoton lithography. Moreover, they demonstrate pattern ability by nanoimprint lithography, making them suitable for future mass production of MOEs.

Preliminary experience of optical elements fabrication by X-ray lithography

1995 ◽  
Vol 359 (1-2) ◽  
pp. 412-414 ◽  
Author(s):  
E.G Churin ◽  
V.P Koronkevich ◽  
G.N Kulipanov ◽  
O.A Makarov ◽  
L.A Mezentseva ◽  
...  
Keyword(s):  
Optical Elements ◽  
X Ray

Simulation of Large Scale KDP Crystal Polishing by Computer Controlled Micro-Nano Deliquescence

2012 ◽  
Vol 497 ◽  
pp. 165-169 ◽  
Author(s):  
He Ping Zhang ◽  
Dong Ming Guo ◽  
Xu Wang ◽  
Hang Gao
Keyword(s):  
Large Scale ◽  
Surface Condition ◽  
Single Point ◽  
Damage Threshold ◽  
Diamond Turning ◽  
Water Soluble ◽  
Optical Elements ◽  
Kdp Crystal ◽  
Computer Controlled ◽  
Laser Induced Damage

Although Single Point Diamond Turning (SPDT) can do pretty well in optical surfacing of large scale KDP crystal, both the surface accuracy and integrity are considerably high; meanwhile as the defects of micro-waveness and stress are inevitable, the laser-induced damage threshold of KDP optical elements after SPDT still cannot be satisfied. Because of the characters of deliquescent and water-soluble, the process of computer controlled Micro-nano deliquescence is attempted to remove the residual micro-waveness on KDP surface after SPDT. Based on the assumption of Preston and the characters of Micro-nano deliquescence, the model of material removal ratio is suggested, the dwell time for ascertained KDP surface is solved, the processing of computer controlled Micro-nano deliquescence is simulated and the processed surface condition on theory is obtained. Besides, the influences of different parameters on the surfacing efficiency and accuracy are analyzed. Finally, three polishing tracks are comparatively analyzed. The simulation results are quite important in guiding the experimental polishing of large scale KDP by computer controlled Micro-nano deliquescence

X-ray investigation of strained epitaxial layer systems by reflections in skew geometry

2017 ◽  
Vol 50 (2) ◽  
pp. 475-480 ◽  
Author(s):  
Peter Zaumseil
Keyword(s):  
Complex Analysis ◽  
Reciprocal Lattice ◽  
Angular Divergence ◽  
Reciprocal Space Mapping ◽  
Reciprocal Lattice Point ◽  
Optical Elements ◽  
Diffraction Curve ◽  
X Ray ◽  
Layer Parameter ◽  
Layer Structures

Four different SiGe/Si layer structures, pseudomorphically grown and (partially) relaxed, are used as examples to demonstrate that reflections in symmetric skew geometry can successfully be used to realize a complex analysis of these systems. Taking the intensity exactly along the truncation rod of a reciprocal lattice point, it is possible to simulate this diffraction curve and determine the layer parameter in the projection according to the netplane tilt relative to the surface. The main precondition for this technique and for performing reciprocal space mapping with sufficiently high resolution is a low angular divergence of the incident and detected beams perpendicular to the diffraction plane, which can also be achieved by suitable optical elements on laboratory-based diffractometers.

Conserving the Coherence and Uniformity of Third-Generation Synchrotron Radiation Beams: the Case of ID19, a `Long' Beamline at the ESRF

1998 ◽  
Vol 5 (5) ◽  
pp. 1243-1249 ◽  
Author(s):  
José I. Espeso ◽  
Peter Cloetens ◽  
José Baruchel ◽  
Jürgen Härtwig ◽  
Trevor Mairs ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Phase Contrast ◽  
Angular Size ◽  
Third Generation ◽  
Optical Elements ◽  
X Ray ◽  
Front End ◽  
Ray Path ◽  
Radiation Beams

The lateral coherence length is of the order of 100 µm at the `long' (145 m) ID19 beamline of the ESRF, which is mainly devoted to imaging. Most of the optical elements located along the X-ray path can thus act as `phase objects', and lead to spurious contrast and/or to coherence degradation, which shows up as an enhanced effective angular size of the source. Both the spurious contrast and the coherence degradation are detrimental for the images (diffraction topographs, tomographs, phase-contrast images) produced at this beamline. The problems identified and the way they were solved during the commissioning of ID19 are reported. More particularly, the role of the protection foils located in the front end, the beryllium windows, the filters and the monochromator defects (scratches, dust, small vibrations) is discussed.

scholarly journals The confrontation between general relativity and experiment

2009 ◽  
Vol 5 (S261) ◽  
pp. 198-199
Author(s):  
Clifford M. Will
Keyword(s):  
General Relativity ◽  
Gravitational Wave ◽  
Equivalence Principle ◽  
Gamma Ray ◽  
Strong Field ◽  
Weak Field ◽  
X Ray ◽  
Spacetime Geometry ◽  
Tests Of General Relativity ◽  
Laser Interferometric

AbstractWe review the experimental evidence for Einstein's general relativity. A variety of high precision null experiments confirm the Einstein Equivalence Principle, which underlies the concept that gravitation is synonymous with spacetime geometry, and must be described by a metric theory. Solar system experiments that test the weak-field, post-Newtonian limit of metric theories strongly favor general relativity. Binary pulsars test gravitational-wave damping and aspects of strong-field general relativity. During the coming decades, tests of general relativity in new regimes may be possible. Laser interferometric gravitational-wave observatories on Earth and in space may provide new tests via precise measurements of the properties of gravitational waves. Future efforts using X-ray, infrared, gamma-ray and gravitational-wave astronomy may one day test general relativity in the strong-field regime near black holes and neutron stars.

Investigations of laser-induced damages in fused silica optics using x-ray laser interferometric microscopy

2010 ◽  
Vol 107 (10) ◽  
pp. 103103 ◽  
Author(s):  
D. Margarone ◽  
B. Rus ◽  
M. Kozlová ◽  
J. Nejdl ◽  
T. Mocek ◽  
...  
Keyword(s):  
Fused Silica ◽  
X Ray ◽  
Laser Interferometric

Experimental study on characteristics of nanosecond laser-induced damage on optical elements

2014 ◽  
Vol 12 (s2) ◽  
pp. S21409-321414
Author(s):  
Xianhua Yin Xianhua Yin ◽  
Yifei Zhuang Yifei Zhuang ◽  
Yan Zhang Yan Zhang ◽  
Guowen Zhang Guowen Zhang ◽  
Xingqiang Lu Xingqiang Lu ◽  
...  
Keyword(s):  
Experimental Study ◽  
Nanosecond Laser ◽  
Optical Elements ◽  
Laser Induced Damage

scholarly journals Transient Dynamics Measurement of Light-material Interaction for Laser Optics

2019 ◽  
Vol 215 ◽  
pp. 03005
Author(s):  
Zhichao Liu ◽  
Feng Geng ◽  
Yaguo Li ◽  
Qinghua Zhang ◽  
Jian Wang ◽  
...  
Keyword(s):  
Physical Mechanism ◽  
Early Stage ◽  
Laser Damage ◽  
Time Duration ◽  
Optical Elements ◽  
Time Resolved ◽  
Nanosecond Pulsed Laser ◽  
Laser Induced Damage ◽  
Light Material ◽  
Physical Quantities

Laser damage performance is an important parameter to evaluate the quality of high power laser optical components. Understanding the physical mechanism of the interaction between laser and optical material is of great significance for improving the laser damage resistance of optical elements. For nanosecond pulsed laser, the time duration of laser-induced damage is ultra-short, and the measurement of related physical quantities is very difficult. Therefore, the Time Resolved Pump and Probe (TRPP) technique can effectively solve this problem. TRPP shadow imaging can obtain the transient dynamic information in range of picosecond to microsecond, including the plasma formation in the early stage, the shock wave propagation, the crack expanding, material ejection and other phenomena. Moreover, the ultra-fast physical quantities can be accurately measured by employing two detective beams with perpendicular polarization directions, for example S and P polarization light. All those information provides effective experimental data to reveal the physical mechanism of damage process.

A beam intensity monitor for the evaluation beamline for soft x-ray optical elements

2012 ◽  
Author(s):  
Takashi Imazono ◽  
Naoji Moriya ◽  
Yoshihisa Harada ◽  
Kazuo Sano ◽  
Masato Koike
Keyword(s):  
Beam Intensity ◽  
Optical Elements ◽  
X Ray
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