Open AccessHighly efficient white light generation from barium fluoride
Author(s) -
A. K. Dharmadhikari,
F. A. Rajgara,
N. C. S. Reddy,
Arvinder Sandhu,
D. Mathur
Publication year - 2004
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.12.000695
Subject(s) - optics , barium fluoride , materials science , white light , laser , absorption (acoustics) , wavelength , radiation , fluorescence , crystal (programming language) , optoelectronics , barium , physics , computer science , nuclear physics , metallurgy , programming language
We demonstrate highly efficient white light generation by focusing 45 fs long pulses of 800 nm laser radiation with 1 mJ energy onto a 10 cm long barium fluoride crystal. The entire wavelength band from 400-1000 nm was generated with efficiency greater than 40%. We also observe multiphoton absorption induced fluorescence in the crystal. By employing line focusing geometry at low intensity, we show that white light fringes are formed with a single laser beam, indicative of the coherent property of the white light that is produced.