Striking images of optics and photonics, contributed by OPN readers
Sunlight diffracted by a DVD.
—Kiarash Tajbakhsh, Optical Metrology and Imaging Laboratory, Shahid Beheshti University, Tehran, Iran
31 May 2021
A converging beam of 405 nm wavelength is made to pass through a tilted lens in which the angle of incidence exceeds the critical angle. The result is several internal reflections.
—Satyajeet Patil, Qauntum Science & Technology Lab, PRL, Thaltej, India
24 May 2021
Photo flash on micro slides substrates dipped in Piranha Acid Solution.
—Nimarpreet Kaur, Guru Nanak College for Girls, Sri Muktsar Sahib, Punjab, India, affiliated to Panjab University, Chandigarh, India
17 May 2021
In laser Doppler anemometry, the Doppler-shifted frequency of light pulses reflected from particles in water at the focus point of two laser beams are used to measure the water’s flow rate.
—Tobias Binkele, University of Applied Sciences Bremen, Bremen, Germany
10 May 2021
During a solar eclipse, an image of the sun reflected from a mobile screen displays diffraction, causing multi-colored solar crescents.
—Akhileshwar Mishra, IISER Thiruvananthapuram, India
03 May 2021
Multiple sun reflections from a water ripple in the Manistee River, MI, USA. A combination of the ripple’s period and the exposure angle allows for an 8-period long sequence to be captured within the NA of the camera.
—Catalin Florea, Voyage Photonics, USA
26 Apr 2021
Plasmonic lattice with dye excited by a laser. [OPN April 2021 After Image]
—Ashwin K. Boddeti, Purdue University, USA
19 Apr 2021
Base of a tree with moss after a rain. In the upper right corner of the image, a small puddle in a crevice of the base is visible.
—Joseph Chiara, Alexandria, VA, USA
12 Apr 2021
Binary cyclic S-matrix patterns, which were used to capture an active mode single-pixel image of a low-poly sculpture of the Stanford bunny. The results of this imaging experiment were published in Optics Express.
—Patrick Kilcullen and Jinyang Liang, Institut National de la Recherche Scientifique (INRS), Quebec, Canada
05 Apr 2021
Soap films on a metal grid show interference with the incidence of white light. Image obtained at Soft Matter Lab, EACH-USP.
—Alberto Tufaile, Universidade de São Paulo, Brazil
29 Mar 2021