Inspec keywords: laser materials processing; submillimetre wave filters; integrated optics; Fourier transform spectra; finite difference time-domain analysis; zone plates; resonator filters; terahertz wave devices; optical fabrication; laser ablation; band-pass filters; terahertz wave spectra; optical filters; Fourier transform spectroscopy

Other keywords: optically pumped terahertz laser; finite-difference time-domain simulations; laser direct writing; terahertz zone plates; resonant filter areas; Fourier spectroscopy; integrated laser-ablated bandpass filters; laser-ablated zone plate

Subjects: Microwave photonics; Optical fabrication, surface grinding; Laser materials processing; Laser materials processing; Spatial filters, zone plates, and polarizers; Optical coatings and filters; Integrated optics; Integrated optics