Frequency tunable microwave-photonic carrier generation using heterodyne beat between all-optically frequency locked two lasers

Study of optical heterodyne mixing characteristics in an A1InAs/GaInAs transferred‐substrate double heterojunction bipolar transistor

“…The frequency-dependent optical heterodyne mixing characteristics were measured from 1 to 25 GHz in 1-GHz steps by tuning the beat frequency. In this preliminary work, the high-frequency limit for the heterodynemixing measurements was given by the bandwidth of the spectrum analyzer (Hewlett-Packard, HP8560E) [13]. The experimental results are shown in Figure 4.…”

Review of recent progress on solid‐state millimeter‐wave and terahertz signal sources

“…74 Particularly, the mm-wave and THz source generation with wide frequency tuning range by heterodyne of two locked lasers have been elaborated in literature. [75][76][77][78] This article distinguishes itself from recent review articles on THz science and technologies 4,63,79 by focusing on the developments and integration in nanoscale integrated technologies and provides some future directions based on existing achievements. Section 2 discusses the available semiconductor technologies that enables efficient THz source generation and provides the fundamentals of oscillation on chip.…”

“…Optical phase‐locked loop (PLL) and optical injection locking techniques have been introduced for phase stabilization 74 . Particularly, the mm‐wave and THz source generation with wide frequency tuning range by heterodyne of two locked lasers have been elaborated in literature 75–78 …”