We constructed the first deep ultraviolet (UV) Raman standoff wide-field imaging spectrometer. Our novel deep UV imaging spectrometer utilizes a photonic crystal to select Raman spectral regions for detection. The photonic crystal is composed of highly charged, monodisperse 35.5 ± 2.9 nm silica nanoparticles that self-assemble in solution to produce a face centered cubic crystalline colloidal a...

Among currently available optical spectroscopic methods, Raman spectroscopy has versatile application to investigation of dynamical processes molecules leading chemical changes in the gas and liquid phases. However, it is still a challenge realize an ideal standoff coherent spectrometer with which both high temporal resolution high-frequency can be achieved, so that one remotely probe species r...

Ultra-low frequency (ULF) waves are routinely observed in Earth’s dayside magnetosphere. Here we investigate the influence of externally-driven density variations near-Earth space ULF regime using global 2D simulations performed with hybrid-Vlasov model Vlasiator. With new time-varying boundary setup, introduce a monochromatic Pc5 range periodic variation solar wind. A breathing motion magnetop...

Hyperspectral imaging systems, used in conjunction with appropriate detection and recognition algorithms, have demonstrated to be very appropriate tools for standoff detection in many different environments. Compared to other techniques available such as multispectral imaging, which typically collects only tens of images, hyperspectral instruments are capable of collecting hundreds of images, c...