Coherent millimetre wave to mid-infrared measurements with continuous bandwidth reaching 40 THz

Inverse Scattering Shape Reconstruction of 3d Bacteria Using the Level Set Algorithm

“…Although the level set algorithm capability was proved using experimental data in the microwave frequency range [20,21], the experimental validation of the results obtained in this work will require a coherent radiation system that can measure the amplitude and the phase at high frequencies. The work in [22] and [23] have demonstrated the development of a continuous coherent radiation system operating from the microwave region up to 40 THz. Moreover, for diffuse optical tomography applications, a coherent radiation system has been developed to operate at several discrete frequencies in the infrared frequency range from 300 THz to 450 THz [24].…”

“…Moreover, for diffuse optical tomography applications, a coherent radiation system has been developed to operate at several discrete frequencies in the infrared frequency range from 300 THz to 450 THz [24]. Therefore, we believe that experimental validation of the high frequency level set algorithm for bacteria detection can be conducted in the near future using coherent systems similar to the ones reported in [22][23][24].…”

Performance Analysis of Low Loss Gas Filled Hollow Core Photonic Crystal Fiber (HC-PCF) for Transmission of THz Waves

“…THz frequency range can transfer huge data files and contribute to the increment of communication data rate over the existing systems as well. As a result, THz generation [6] and detection [7] have been developed in the last decades. Existing THz systems largely depend on free space propagation since materials available for waveguides are very absorbent in this frequency band.…”

Low-loss rotated porous core hexagonal single-mode fiber in THz regime

“…Immense attention has recently been attracted by the topic since it has applications in pharmaceutical drug testing [1], sensing, imaging, security, communications [2,3] and medical diagnostics [4,5]. To keep pace with the enormous popularity, THz wave generation [6] and detection [7,8] have been developed promisingly in the last decade. However, existing THz systems still depend on free space propagation since all the materials available for waveguides are extremely absorbent in this frequency band.…”