A unique ultra wide band receiver is provided that blends together RF and photonic technologies. A semiconductor active region amplifies, by stimulated emission, light in the laser cavity at the lasing wavelength. On the other hand, the programmable logic IC changes the program set being read, according to what is displayed on the display, television images, a monitor image supplied from a computer, or image data from a memory card. A chuck is provided that engages with an outer circumferential surface of the fluid tube, thereby retaining the fluid tube. This description is not intended to be a complete description of, or limit the scope of, the invention.