Local oscillator chain for 1.55 to 1.75THz with 100-/spl mu/W peak power

We report on the design and performance of a fix-tuned /spl times/2/spl times/3/spl times/3 frequency multiplier chain that covers 1.55-1.75THz. The chain is nominally pumped with 100mW at W-band. At 120K the measured output power is larger than 4/spl mu/W across the band with a peak power of 100/spl mu/W at 1.665THz. A similar chain operated at room temperature produced a peak power of 21/spl mu/W. These power levels now make it possible to deploy multipixel heterodyne imaging arrays in this frequency range.

[1]  I. Mehdi,et al.  A 540-640-GHz high-efficiency four-anode frequency tripler , 2005, IEEE Transactions on Microwave Theory and Techniques.

[2]  I. Mehdi,et al.  An all-solid-state broad-band frequency multiplier chain at 1500 GHz , 2004, IEEE Transactions on Microwave Theory and Techniques.

[3]  I. Mehdi,et al.  A planar-diode frequency tripler at 1.9THz , 2003, IEEE MTT-S International Microwave Symposium Digest, 2003.

[4]  I. Mehdi,et al.  A 1.7-1.9 THz local oscillator source , 2004, IEEE Microwave and Wireless Components Letters.