Abstract

Field tests have been conducted of a broadband illuminator for active hyperspectral imaging (HSI) using a short-wave infrared supercontinuum laser (SWIR-SCL). We demonstrated irradiance comparable to the sun for two-way measurements at a 1.4 km distance between laser and target, and performed change detection and ranging. The experimental results suggest that the range resolution of our method is $\sim 1.5\mathrm{cm}$ even at the 1.4 km distance. Hence, we demonstrated the possibility to perform HSI with active broadband illumination using the SWIR-SCL. To our knowledge, this experiment is the first-ever to test two-way propagation of the active HSI illumination over a long distance. The 64 W SWIR-SCL provides near sunlight-equivalent illumination over multiple square meters, and the laser could enable HSI 24 h a day, even under a cloud cover, as well as enhanced capabilities such as change detection and ranging.

© 2016 Optical Society of America

Field trial of active remote sensing using a high-power short-wave infrared supercontinuum laser

Vinay V. Alexander, Zhennan Shi, Mohammed N. Islam, Kevin Ke, Galina Kalinchenko, Michael J. Freeman, Agustin Ifarraguerri, Joseph Meola, Anthony Absi, James Leonard, Jerome A. Zadnik, Anthony S. Szalkowski, and Gregory J. Boer
Appl. Opt. 52(27) 6813-6823 (2013)

Active and passive short-wave infrared and near-infrared imaging for horizontal and slant paths close to ground

Ove Steinvall, Magnus Elmqvist, Tomas Chevalier, and Ove Gustafsson
Appl. Opt. 52(20) 4763-4778 (2013)

Active and passive imaging of clothes in the NIR and SWIR regions for reflectivity analysis

Christina Grönwall, Ove Steinvall, Benjamin Göhler, and Dominique Hamoir
Appl. Opt. 55(20) 5292-5303 (2016)

Advanced short-wavelength infrared range-gated imaging for ground applications in monostatic and bistatic configurations

Endre Repasi, Peter Lutzmann, Ove Steinvall, Magnus Elmqvist, Benjamin Göhler, and Gregor Anstett
Appl. Opt. 48(31) 5956-5969 (2009)

Spatially encoded hyperspectral compressive microscope for ultrabroadband VIS/NIR hyperspectral imaging

Lukáš Klein, Jan Touš, and Karel Žídek
Appl. Opt. 62(15) 4030-4039 (2023)