scholarly journals Simple setup for wavelength estimation by using the Airy disk with didactical purposes

2018 ◽  
Author(s):  
Alberto Uriel Rivera Ortega
Keyword(s):  
Airy Disk

Wavefront dislocations and phase object registering inside the airy disk

1991 ◽  
Author(s):  
Vladimir P. Tychinsky ◽  
Alexander V. Tavrov
Keyword(s):  
Phase Object ◽  
Airy Disk

scholarly journals Densified Pupil Spectrograph as High-precision Radial Velocimetry: From Direct Measurement of the Universe’s Expansion History to Characterization of Nearby Habitable Planet Candidates

2022 ◽  
Vol 163 (2) ◽  
pp. 63
Author(s):  
Taro Matsuo ◽  
Thomas P. Greene ◽  
Mahdi Qezlou ◽  
Simeon Bird ◽  
Kiyotomo Ichiki ◽  
...  
Keyword(s):  
Radial Velocity ◽  
Direct Measurement ◽  
High Precision ◽  
Resolving Power ◽  
Line Of Sight ◽  
High Dispersion ◽  
Velocity Measurements ◽  
Habitable Planet ◽  
Airy Disk

Abstract The direct measurement of the universe’s expansion history and the search for terrestrial planets in habitable zones around solar-type stars require extremely high-precision radial-velocity measures over a decade. This study proposes an approach for enabling high-precision radial-velocity measurements from space. The concept presents a combination of a high-dispersion densified pupil spectrograph and a novel line-of-sight monitor for telescopes. The precision of the radial-velocity measurements is determined by combining the spectrophotometric accuracy and the quality of the absorption lines in the recorded spectrum. Therefore, a highly dispersive densified pupil spectrograph proposed to perform stable spectroscopy can be utilized for high-precision radial-velocity measures. A concept involving the telescope’s line-of-sight monitor is developed to minimize the change of the telescope’s line of sight over a decade. This monitor allows the precise measurement of long-term telescope drift without any significant impact on the Airy disk when the densified pupil spectra are recorded. We analytically derive the uncertainty of the radial-velocity measurements, which is caused by the residual offset of the lines of sight at two epochs. We find that the error could be reduced down to approximately 1 cm s−1, and the precision will be limited by another factor (e.g., wavelength calibration uncertainty). A combination of the high-precision spectrophotometry and the high spectral resolving power could open a new path toward the characterization of nearby non-transiting habitable planet candidates orbiting late-type stars. We present two simple and compact highly dispersed densified pupil spectrograph designs for cosmology and exoplanet sciences.

Optical phase imaging of living organisms inside the Airy disk

1994 ◽  
Author(s):  
Vladimir P. Tychinsky ◽  
Georgy E. Koufal ◽  
Alex Odintsov ◽  
Tatiana V. Vyshenskaia
Keyword(s):  
Phase Imaging ◽  
Optical Phase ◽  
Living Organisms ◽  
Airy Disk

Properties of the phase images inside the airy disk (Proceedings Only)

1992 ◽  
Author(s):  
Vladimir P. Tychinsky ◽  
Alexander V. Tavrov
Keyword(s):  
Phase Images ◽  
Airy Disk

Anomalous change of Airy disk with changing size of spherical particles

2016 ◽  
Vol 170 ◽  
pp. 83-89 ◽  
Author(s):  
Linchao Pan ◽  
Fugen Zhang ◽  
Rui Meng ◽  
Jie Xu ◽  
Chenze Zuo ◽  
...  
Keyword(s):  
Spherical Particles ◽  
Anomalous Change ◽  
Airy Disk

Optical Design of Endoscopic Telecentric Measuring Apparatus

2013 ◽  
Vol 552 ◽  
pp. 325-328
Author(s):  
Qiong Wu ◽  
Yang Xiang ◽  
Bin Yang ◽  
Qian Song ◽  
Li Jie Hou ◽  
...  
Keyword(s):  
Surface Defects ◽  
Optical Design ◽  
Mirror Image ◽  
Depth Of Field ◽  
Modulation Transfer ◽  
Master Cylinder ◽  
Precision Measuring ◽  
Pentagonal Prism ◽  
Airy Disk ◽  
To Receive

Endoscopic telecentric apparatus is a precision measuring instrument which consists of optical, mechanical and electrical technologies. It can be applied in real-time accurate test to detect the position, shape and wall surface defects of brake master cylinder. This paper designed an optical system with Zemax, it can be used in endoscopic telecentric apparatus. The system has 4mm linear field of view, the line of vision is 90°,the magnification is 0.75×,the depth of field is 6mm.The value of modulation transfer function (MTF) is close to the diffraction limit, the resolution of the system is up to 3 and the spot diagrams of all configurations are smaller than Airy disk, the total track is less than 300mm. It adopts 1/6CCD to receive image, the measurement accuracy reaches to 0.03mm.The system uses pentagonal prism to realize 90°line of vision, it is convenient to assemble and avoids the mirror image. The image quality is good and the design meets the requirement.

scholarly journals Simple and robust method for determination of laser fluence thresholds for material modifications: an extension of Liu’s approach to imperfect beams

2021 ◽  
Vol 1 ◽  
pp. 7
Author(s):  
Mario Garcia-Lechuga ◽  
David Grojo
Keyword(s):  
Correction Method ◽  
Optical Path ◽  
Robust Method ◽  
Robust Solution ◽  
Advanced Control ◽  
Applied Approach ◽  
Laser Induced Damage ◽  
Airy Disk ◽  
Modification Of Materials

The so-called D-squared or Liu’s method is an extensively applied approach to determine the irradiation fluence thresholds for laser-induced damage or modification of materials. However, one of the assumptions behind the method is the use of an ideal spatial Gaussian beam that can lead in practice to significant errors depending on beam imperfections. In this work, we rigorously calculate the bias corrections required when applying the same method to Airy-disk like profiles. Those profiles are readily produced from any beam by insertion of an aperture in the optical path. Thus, the correction method gives a robust solution for exact threshold determination without any added technical complications as for instance advanced control or metrology of the beam. Illustrated by two case-studies, the approach holds potential to solve the strong discrepancies existing between the laser-induced damage thresholds reported in the literature.  It provides also an appropriate tool for new studies with the most extreme laser radiations.

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