Patent ID: 9057927
Filing Date: 2015-06-16
Classification: G02F,H01S

Abstract:
1. An apparatus for generating a gigahertz-terahertz-range signal having a frequency in a gigahertz to terahertz frequency range, the apparatus comprising: a pump laser that outputs pump light having a pump frequency; and a single cavity, operably coupled to the pump laser to receive the pump light, the single cavity having non-linear material in an optical path in the cavity that receives the pump light and generates light of two intermediate frequencies, and that uses the light of the two intermediate frequencies to generate the gigahertz-terahertz-range signal, wherein the gigahertz-terahertz-range signal has a frequency that is equal to a difference between the two intermediate frequencies, and wherein each of the two intermediate frequencies is independently and separately frequency filtered in the cavity.