Title :
Rapidly tunable millimeter-wave optical transmitter for lidar-radar
Author :
Li, Yifei ; Vieira, Amarildo J C ; Goldwasser, Samuel M. ; Herczfeld, Peter R.
Author_Institution :
Center for Microwave-Lightwave Eng., Drexel Univ., Philadelphia, PA, USA
fDate :
10/1/2001 12:00:00 AM
Abstract :
This paper reports on the optical generation of a rapidly tunable millimeter-wave subcarrier for lidar-radar. The millimeter-wave signal is generated by beating the output from two Nd:YVO4/MgO:LiNbO 3 electrooptical monomode microchip laser sections realized monolithically in a single composite crystal. The device has a continuous tuning range up to 45 GHz. The measured chirp rate is 3816 THz/s, the voltage sensitivity is 10.6 MHz/V, and the measured residual phase noise is -106 dBc/Hz at 10-kHz offset
Keywords :
chirp modulation; electro-optical modulation; laser beam applications; microwave photonics; optical radar; optical transmitters; phase noise; solid lasers; 45 GHz; Nd:YVO4-MgO:LiNbO3; Nd:YVO4/MgO:LiNbO3; chirp rate; continuous tuning range; electrooptical monomode microchip laser; lidar-radar; millimeter-wave optical transmitter; millimeter-wave subcarrier; residual phase noise; voltage sensitivity; Laser noise; Laser tuning; Lasers and electrooptics; Millimeter wave measurements; Noise measurement; Optical sensors; Optical transmitters; Phase measurement; Signal generators; Tunable circuits and devices;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
