Antennas for transmission of radio waves in the frequency range from megahertz to terahertz; Laboratory apparatus and instruments, namely, for photonics testing, from megahertz to terahertz signal generator, laser conditioning apparatus for fiber optics, laser current control apparatus, laser temperature control apparatus, low noise laser instrumentation, laser instrumentation, laser measurement photonic chip testing apparatus, and instrumentation for photonic chip research and development; O...