Zobrazeno 1 - 10
of 45
pro vyhledávání: '"J. A. Dharmadhikari"'
Publikováno v:
International Journal of High Dilution Research - ISSN 1982-6206. 19:26-38
We have carried out systematic studies to investigate the effect on supercontinuum generation in water using 40 fs laser pulses when doped with Homeopathic medicines. We perform these studies using five series of medications with different levels of
Autor:
Rishav Sagar, J. A. Dharmadhikari, Venu Gopal Achanta, S. Dutta Gupta, Pravin Vaity, Aditya K. Dharmadhikari
Publikováno v:
Optics letters. 46(2)
All-dielectric metamaterials conforming to an optical reflectionless potential (ORP) offer broadband, omni-directional suppression of reflection. Though they are predicted to possess broadband negative group velocity dispersion (GVD), ultrashort puls
Autor:
Aditya K. Dharmadhikari, J. A. Dharmadhikari, Shashank Pathak, Deepak Mathur, Arumugam Thamizhavel
Publikováno v:
Journal of Crystal Growth. 433:43-47
We report on growth of micro-crystals such as sodium chloride (NaCl), copper sulphate (CuSO 4 ), potassium di-hydrogen phosphate (KDP) and glycine (NH 2 CH 2 COOH) in solution by in-situ heating using continuous wave Nd:YVO 4 laser light. Crystals ar
Publikováno v:
Springer Series in Chemical Physics ISBN: 9783030037857
This chapter summarizes some of our recent work on the low-order harmonic generation in air using intense femtosecond pulses. Our results highlight the dependence of experimental conditions such as incident wavelength, external focusing and laser pol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a84af4520d53b35dcdb2e4f5e2b01ca
https://doi.org/10.1007/978-3-030-03786-4_9
https://doi.org/10.1007/978-3-030-03786-4_9
Inscription of type I and depressed cladding waveguides in lithium niobate using a femtosecond laser
Autor:
Anuj Bhatnagar, R. Bernard, Deepak Mathur, J. A. Dharmadhikari, S. P. Bhardwaj, Aditya K. Dharmadhikari, Kshitij Mittholiya
Publikováno v:
Applied optics. 56(20)
We describe two types of waveguides (type I and depressed cladding) inscribed in lithium niobate using a variable repetition rate (200 kHz–25 MHz), 270 fs duration fiber laser. The type I modification-based waveguides have propagation losses in the
Autor:
Arpita Nath, Aditya K. Dharmadhikari, J. A. Dharmadhikari, Shyamalava Mazumdar, Deepak Mathur
Publikováno v:
Physical chemistry chemical physics : PCCP. 19(39)
The effects of solvents on the conformation of hemin and their implications on the dynamics of the complex have been studied using the time-resolved optical Kerr effect (OKE) with 35 fs laser pulses (at a central wavelength of 800 nm). The OKE enable
Publikováno v:
SPIE Proceedings.
Filamentation in gases due to high power femtosecond pulses results from the combined action of the optical Kerr effect (giving rise to self-focusing) and plasma formation (giving rise to defocusing) that confines optical energy in a small region ove
Autor:
Rucha Anil Deshpande, Deepak Mathur, Krithika Dota, J. A. Dharmadhikari, Aditya K. Dharmadhikari, Arpita Nath
Publikováno v:
Applied Physics B. 117:471-479
We experimentally investigate the spectral extent and spectral profile of the supercontinuum (SC) generated in transparent solids: barium fluoride, calcium fluoride, and fused silica upon irradiation by intense femtosecond-long pulses of 800, 1,380,
Autor:
Deepak Mathur, Aditya K. Dharmadhikari, Vanessa R. M. Rodrigues, Santhosh Chidangil, J. A. Dharmadhikari, Hema Ramachandran
Publikováno v:
OSA Continuum. 2:1328
Photon sieves, a collection of randomly positioned apertures, focus electromagnetic radiation diffractively and find applications in x-ray optics to astronomy to bio-medical imaging. Femtosecond laser direct writing is an emerging rapid, reliable, an
Publikováno v:
Journal of the Optical Society of America B. 36:A38
We report our results on the effect of random multiple scattering on supercontinuum (SC) generation by intense light pulses. Spectral measurements are performed on the SC generated when femtosecond laser pulses propagate in water containing randomly