Abstract

A novel optical approach to single-shot chemical imaging with high spectroscopic resolution is described with the use of a prototype dimension-reduction fiber-optic array. Images are focused onto a 30 X 20 array of hexagonally packed 250 mu m o.d. f /2 optical fibers that are drawn into a 600 X 1 distal array with specific ordering. The 600 X 1 side of the array is imaged with an f /2 spectrograph equipped with a holographic grating and a charge-coupled device (CCD) camera for spectral analysis. Software is used to extract the spatial/spectral information contained in the CCD images and deconvolute them into wavelength-specific reconstructed images or position-specific spectra that span a 190 nm wavelength space. "White light" zero-order images and first-order spectroscopic images of laser plumes have been reconstructed to illustrate proof-of-principle.

Reconstruction and analysis of transient evolution images of laser-produced plasma plumes

Siqi He, Qi Min, Haidong Lu, Yanhong Wu, Shiquan Cao, Duixiong Sun, Denghong Zhang, Maogen Su, and Chenzhong Dong
Opt. Lett. 49(3) 566-569 (2024)

Plasma plumes produced by laser ablation of Al with single and double pulse schemes

N. Smijesh, Kavya H. Rao, D. Chetty, I. V. Litvinyuk, and R. T. Sang
Opt. Lett. 43(24) 6081-6084 (2018)

Single-shot ultrafast optical imaging

Jinyang Liang and Lihong V. Wang
Optica 5(9) 1113-1127 (2018)

Single-shot ultrafast imaging via spatiotemporal division of femtosecond laser pulses

Sarang Yeola, Donghoon Kuk, and Ki-Yong Kim
J. Opt. Soc. Am. B 35(11) 2822-2827 (2018)

Longitudinal imaging in biological tissues with a single laser shot correlation system

E. Bordenave, E. Abraham, G. Jonusauskas, J. Oberlé, and C. Rullière
Opt. Express 10(1) 35-40 (2002)