L. R. Ram-Mohan Website

Nonlinear Optics

''Hole induced four wave mixing and intervalence band relaxation times in p-GaAs and p-Ge,'' S. Y. Yuen, P. A. Wolff, L. R. Ram-Mohan, and R. A. Logan, Solid State Communications 56, 489-491 (1985).
''Nonlinear optical properties of GaAs/Ga1-xAlxAs superlattices," H. Xie, L. Friedman, and L. R. Ram-Mohan, Physical Review B 42, 7124-7131 (1990).
''Stimulated emission of Longitudinal Optic Phonons in Narrow Gap Pb1-xSnxTe,'' R. B. Sohn, L. R. Ram-Mohan, H. Xie, and P. A. Wolff, Physical Review B 42, 3608-3619 (1990).
''Electron hole recombination in narrow gap Hg1-xCdxTe and stimulated emission of longitudinal optic phonons,'' H. Xie, L. R. Ram-Mohan, and P. A. Wolff, Physical Review B 42, 3620-3627 (1990).
''Optical nonlinearities of GaAs/Ga1-xAlxAs superlattices, H. Xie, L. Friedman, and L. R. Ram-Mohan, Proc. SPIE-Int. Soc. Opt. Eng. Vol 1283, 360-371 (1990).
Invited Paper: ''Multiband finite element modeling of wavefunction-engineered electro-optical devices,'' L. R. Ram-Mohan and J. R. Meyer, Journal of Nonlinear Optical Physics & Materials 4, 191-243, special issue (1995).
''Electron transport in InAs/Ga[1-x]In[x]Sb superlattices''; C. A. Hoffman, J. R. Meyer, E. R. Youngdale, F. J. Bartoli, R. H. Miles, and L. R. Ram-Mohan, Solid State Electronics 37, 1203-1206 (1994).
''Calculations of second-order nonlinear optical susceptibilities in III-V and II-VI semiconductor heterostructures''; L. C. Lew Yan Voon and L. R. Ram-Mohan, Physical Review B 50, 14421-14434 (1994).
''Intersubband [χ²] in symmetric and asymmetric n- and p-doped GaAs and HgTe quantum wells'', L. C. Lew Yan Voon and L. R. Ram-Mohan, Proc. 7th Annual IEEE-LEOS Meeting, Boston, IEEE publications p30-31 (1994).
INVITED PAPER: ''Finite element and tight-binding calculations of nonlinear optical properties in wavefunction-engineered quantum heterostructures,'' L. R. Ram-Mohan, Proc. 8th Annual IEEE-LEOS Meeting, San Francisco, IEEE publications, Vol. 2, p17-18 (1995).
Intersubband second-harmonic generation with voltage-controlled phase matching," '' J. R. Meyer, C. A. Hoffman, F. J. Bartoli, and L. R. Ram-Mohan, Applied Physics Letters 67, 608-610 (1995).
Infrared electro-optical modulators based on field induced Γ-L intervalley transfer," '' J. R. Meyer, C. A. Hoffman, F. J. Bartoli, and L. R. Ram-Mohan, Applied Physics Letters 67, 2756-2758 (1995).
''Momentum Space Reservoir for Saturation Suppression in Intersubband Frequency conversion devices,'' J. R. Meyer, C. A. Hoffman. E. R. Youngdale, F. J. Bartoli, and L. R. Ram-Mohan, Proc. 7th Annual IEEE-LEOS Meeting, Boston, IEEE publications, p177 (1994).
''Momentum-space reservoir for enhancement of intersubband second-harmonic generation,'' J. R. Meyer, C. A. Hoffman, F. J. Bartoli, E. R. Youngdale, and L. R. Ram-Mohan, IEEE Journal of Quantum Electronics 31, 706-714 (1995).
Invited Paper: ''Normal incidence intersubband transitions for infrared electro-optical modulation and second harmonic generation,'' H. Xie, W. I. Wang, J. R. Meyer, C. A. Hoffman, and L. R. Ram-Mohan, J. Nonlinear Optical Physics & Materials 4, 337-362, special issue (1995).
''Normal incidence second-harmonic generation in L-valley AlSb/GaSb/Ga1-xAlxSb/AlSb stepped quantum wells,'' H. Xie, W. I Wang, J. R. Meyer, and L. R. Ram-Mohan, Applied Physics Letters 65, 2048-2050 (1994).
Invited Talk: ''InAs/GaSb/AlSb Quantum Wells for Infrared Electro-Optic Applications,'' C. A. Hoffman, J. R. Meyer, F. J. Bartoli, and L. R. Ram-Mohan, 3rd International Symposium on Long Wavelength Infrared Detectors and Arrays: Physics and Applications, Chicago IL (1995).
''Infrared electro-optical modulators employing intervalley transfer in asymmetric double quantum wells,'' J. R. Meyer, C. A. Hoffman, F. J. Bartoli, and L. R. Ram-Mohan, Conference on Lasers and Electro-Optics CLEO’95, p359-360 (1995).
''InAs-GaSb-AlSb quantum wells for infrared electro-optic applications,'' C. A. Hoffman, J. R. Meyer, F. J. Bartoli, L. R. Ram-Mohan, Proceedings of the Third International Symposium on Long Wavelength Infrared Detectors and Arrays: Physics and Applications III, p 77-88, (1995).
Comment on above paper: ''Normal incidence second-harmonic generation in L-valley AlSb/GaSb/Ga1-xAlxSb/AlSb stepped quantum wells,'' by M. Zaluzny and V. Bondarenko, Applied Physics Letters 68, 1872 (1996). Our reply: L. R. Ram-Mohan, J. R. Meyer, H. Xie, and W. I. Wang, Applied Physics Letters 68, 1873 (1996).
Invited Paper: ''Wavefunction engineering of advanced quantum well laser, nonlinear optical, and electro-optical devices for the IR,'' J. R. Meyer, I. Vurgaftman, J. I. Malin, C. A. Hoffman, and L. R. Ram-Mohan, Workshop on Optical Properties of Mesoscopic Structures, Snowbird, Utah (1996).
"Optimized second-harmonic generation in asymmetric double quantum wells," I. Vurgaftman, J. R. Meyer, and L. R. Ram-Mohan, IEEE Journal of Quantum Electronics 32, 1334-1346 (1996).
"Detuned intersubband resonances for broadband field-modulated second-harmonic generation," I. Vurgaftman, J. Meyer, and L.R. Ram-Mohan, Solid State Communications 100, 663-667 (1996).
"Phase matching in waveguide-mode intersubband χ(2)(2ω) devices," I. Vurgaftman, J. R. Meyer, and L. R. Ram-Mohan, CLEO-QELS Proceedings Vol. 9, pp 274-275 (1996).
Invited Talk: "Novel Nonlinear Optical Devices Based on Wavefunction-Engineered InAs/GaSb/AlSb Family Heterostructures,'' J. R. Meyer, C. A. Hoffman, F. J. Bartoli, and L. R. Ram-Mohan, 2nd Mediterranean Workshop and Topical Meeting on Novel Optical Materials and Applications, 28 May – 2 June 1995, Cetraro Italy (1995).
Invited Talk: "Waveguide-mode intersubband second harmonic generation with separate active and phase matching regions," I. Vurgaftman, J. R. Meyer, and L. R. Ram-Mohan, LEOS Nonlinear Optics Topical Meeting, Maui, Hawaii, July 8-12, (1996).

BACK