• warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.
  • warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/opticist/public_html/modules/aggregator/aggregator.pages.inc on line 259.

Applied Optics

Syndicate content Applied Optics
Applied Optics
Updated: 20 weeks 5 days ago

Molecular vibrations of bisphenol “S” revealed by FTIR spectroscopy and their correlation with bisphenol “A” disclosed by principal component analysis

Thu, 03/15/2018 - 01:00
Ramzan Ullah, Xiangzhao Wang
Bisphenol “S” (BPS), a common replacement for bisphenol “A” (BPA) after its ban in food contact applications, is studied by Fourier transform infrared (FTIR) spectroscopy (400–6800  cm^−1). Identified molecular vibrations are assigned based on ... [Appl. Opt. 57, D20-D26 (2018)]
Categories: Optics news

Light intensity and FOV-controlled adaptive fluidic iris

Thu, 03/15/2018 - 01:00
Chao Liu, Di Wang
In this paper, we propose a light intensity and field of view (FOV) controlled adaptive fluidic iris. A 90° twisted-nematic liquid crystal (TNLC) cell and two orthogonal polarizers are attached on the substrate. When a voltage is applied to TNLC, it can change the phase of the incident ... [Appl. Opt. 57, D27-D31 (2018)]
Categories: Optics news

Comparative study between linear and non-linear frequency-modulated pulse-compression thermography

Thu, 03/15/2018 - 01:00
S. Laureti, G. Silipigni, L. Senni, R. Tomasello, P. Burrascano, M. Ricci
Pulse-compression thermography is an emerging non-destructive technique whose effectiveness strictly depends on the choice of the coded excitations used to modulate the heating stimulus. In this paper, the features of frequency-modulated coded signals, i.e., chirps, have been tested for imaging ... [Appl. Opt. 57, D32-D39 (2018)]
Categories: Optics news

Performance prediction of p-i-n HgCdTe long-wavelength infrared HOT photodiodes

Wed, 03/14/2018 - 01:00
Antoni Rogalski, Małgorzata Kopytko, Piotr Martyniuk
Recently, an enhanced computer program was applied to explain in detail the influence of different recombination mechanisms (Auger, radiative, and Shockley–Read–Hall) on the performance of high-operation-temperature, long-wavelength, infrared p-i-n HgCdTe heterojunction photodiodes. ... [Appl. Opt. 57, D11-D19 (2018)]
Categories: Optics news

Comparison and evaluation of geometric calibration methods for infrared cameras to perform metric measurements on a plane

Tue, 02/13/2018 - 01:00
R. Usamentiaga, C. Ibarra-Castanedo, X. Maldague
Geometric information from infrared images can complement the information about the measured infrared radiation. However, this requires geometric camera calibration. In this work, three calibration methods for infrared cameras are compared: a direct and an iterative estimation of the transformation ... [Appl. Opt. 57, D1-D10 (2018)]
Categories: Optics news

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