PaperUltrasonic maser amplification by stimulated phonon-photon double quantum emission in MgON.S. ShirenApplied Physics Letters
PaperHigh-power, pulsed-microwave measurements of critical currents in thin films of Y-Ba-Cu-O and NbN.S. Shiren, R.B. Laibowitz, et al.Physical Review B
PaperTheory of Phase and Amplitude Bunching in Traveling Wave InteractionsJ.A. Armstrong, N.S. ShirenIEEE JQE
PaperMeasurement of signal velocity in a region of resonant absorption by ultrasonic paramagnetic resonanceN.S. ShirenPhysical Review