Patent Number: 6,297,716

Title: Q-switched cavity multiplier

Abstract: A switched frequency multiplier receives pulses of pump energy as an input signal. The input signal is transferred to within a housing having a first cavity tuned to the frequency of the pump signal and a second cavity which is tuned to a harmonic of the input signal and is enclosed within the first cavity. An outlet port couples the second tuned cavity to a waveguide which includes a Q-switch that can be turned on and off. The interior of the housing has a planar grid of layers which includes a layer of nonlinear material and a frequency selective layer. The frequency selective layer is transparent to the input signal but reflective to the harmonic output signal thereby trapping energy in the second cavity. The multiplier operates by receiving a pump pulse and storing the energy while the Q-switch is closed. When the Q-switch is opened near the end of the pump pulse, the stored energy is suddenly released to produce a relatively high energy harmonic pulse having a shorter duration than the pump pulse.

Inventors: Wood; James Richard (Grapevine, TX)

Assignee: Lockheed Martin Corporation

International Classification: H03B 5/18 (20060101); H01P 001/00 (); H03B 019/00 ()

Expiration Date: 10/02/2018