Helge E. Engan

All-fiber acousto-optic frequency shifter

B. Y. Kim, Helge E. Engan, H. J. Shaw et al. · Optics Letters · 1986 · 298 citations

Engineering, Electrical Engineering, Optics +11

Improved material constants for LiNbO/sub 3/ and LiTaO/sub 3/

G. Kovacs, M. Anhorn, Helge E. Engan et al. · IEEE Symposium on Ultrasonics · 2002 · 257 citations

Natural Sciences, Materials Engineering, Materials Science +14

Electrically tunable photonic bandgap guidance in a liquid-crystal-filled photonic crystal fiber

Magnus W. Haakestad, Thomas Tanggaard Alkeskjold, M.D. Nielsen et al. · IEEE Photonics Technology Letters · 2005 · 251 citations

Natural Sciences, Materials Engineering, Materials Science +13

Excitation of elastic surface waves by spatial harmonics of interdigital transducers

Helge E. Engan · IEEE Transactions on Electron Devices · 1969 · 236 citations

Natural Sciences, Electrical Engineering, Acoustics +14

Propagation and optical interaction of guided acoustic waves in two-mode optical fibers

Helge E. Engan, B.Y. Kim, J. Blake et al. · Journal of Lightwave Technology · 1988 · 168 citations

Natural Sciences, Materials Science, Physics +17