Browsing by Author "Mora-Ramos, M. E."
Now showing items 21-33 of 33
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Impurity-related linear and nonlinear optical response in quantum-well wires with triangular cross section
Duque, C. A.; Mora-Ramos, M. E.; Kasapoglu, E.; Ungan, F.; Yesilgul, U.; Sakiroglu, S.; Sari, H.; Sokmen, I. (ELSEVIER SCIENCE BV, 2013)The Is-like and 2p-like donor impurity energy states are studied in a semiconductor quantum wire of equilateral triangular cross section as functions of the impurity position and the geometrical size of the structure. ... -
Intense laser field effect on impurity states in a semiconductor quantum well: transition from the single to double quantum well potential
Duque, C. A.; Mora-Ramos, M. E.; Kasapoglu, E.; Sari, H.; Sokmen, I. (SPRINGER, 2011)In this work are studied the intense laser effects on the impurity states in GaAs-Ga1- (x) Al (x) As quantum wells under applied electric and magnetic fields. The electric field is taken oriented along the growth direction ... -
Intense Laser Field Effects on the Shallow-Donor Impurity States in Rectangular-Shaped Quantum Well Wires
Duque, C. A.; Mora-Ramos, M. E.; Yesilgul, U.; Ungan, F.; Sakiroglu, S.; Kasapoglu, E.; Sari, H.; Sokmen, I. (POLISH ACAD SCIENCES INST PHYSICS, 2014)Using the effective mass and parabolic band approximations, the binding energy of a shallow donor impurity is calculated in a GaAs-(Ga,Al)As quantum well wire of rectangular transversal section, under the combined effects ... -
Intersubband optical absorption coefficients and refractive index changes in a graded quantum well under intense laser field: Effects of hydrostatic pressure, temperature and electric field
Ungan, F.; Restrepo, R. L.; Mora-Ramos, M. E.; Morales, A. L.; Duque, C. A. (ELSEVIER SCIENCE BV, 2014)The effects of hydrostatic pressure, temperature, and electric field on the optical absorption coefficients and refractive index changes associated with intersubband transition in a typical GaAs/Ga0.7Al0.3As graded quantum ... -
Linear and nonlinear optical properties in a double inverse parabolic quantum well under applied electric and magnetic fields
Ungan, F.; Mora-Ramos, M. E.; Duque, C. A.; Kasapoglu, E.; Sari, H.; Sokmen, I. (ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD, 2014)In the present work, the effects of electric and magnetic fields on the optical absorption coefficient and refractive index changes associated with intersubband transitions in a GaAs/AlxGa1-xAs double inverse parabolic ... -
Linear and nonlinear optical properties in a semiconductor quantum well under intense laser radiation: Effects of applied electromagnetic fields
Mora-Ramos, M. E.; Duque, C. A.; Kasapoglu, E.; Sari, H.; Sokmen, I. (ELSEVIER SCIENCE BV, 2012)In this work we are studying the intense laser effects on the electron-related linear and nonlinear optical properties in GaAs-Ga1-xAlxAs quantum wells under applied electric and magnetic fields. The calculated quantities ... -
Linear and nonlinear optical properties in an asymmetric double quantum well under intense laser field: Effects of applied electric and magnetic fields
Yesilgul, U.; Al, E. B.; Martinez-Orozco, J. C.; Restrepo, R. L.; Mora-Ramos, M. E.; Duque, C. A.; Ungan, F.; Kasapoglu, E. (ELSEVIER SCIENCE BV, 2016)In the present study, the effects of electric and magnetic fields on the linear and third-order nonlinear optical absorption coefficients and relative change of the refractive index in asymmetric GaAs/GaAlAs double quantum ... -
Nonlinear optical properties of triple delta-doped quantum wells: The impact of the applied external fields
Ungan, F.; Mora-Ramos, M. E.; Kasapoglu, E.; Sari, H.; Sokmen, I (ELSEVIER GMBH, 2019)In the present paper, we theoretically investigate the effect of applied external fields, such as electric, magnetic, and intense terahertz laser fields on the optical absorption and the relative refractive index change ... -
Nonlinear optical rectification and second-harmonic generation in a semi-parabolic quantum well under intense laser field: Effects of electric and magnetic fields
Ungan, F.; Martinez-Orozco, J. C.; Restrepo, R. L.; Mora-Ramos, M. E.; Kasapoglu, E.; Duque, C. A. (ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD, 2015)The effects of electric and magnetic fields on the nonlinear optical rectification and second harmonic generation coefficients related with intersubband transitions in a semi-parabolic quantum well under intense laser field ... -
Nonlinear optical rectification and the second and third harmonic generation in Poschl-Teller quantum well under the intense laser field
Sakiroglu, S.; Ungan, F.; Yesilgul, U.; Mora-Ramos, M. E.; Duque, C. A.; Kasapoglu, E.; Sari, H.; Sokmen, I. (ELSEVIER SCIENCE BV, 2012)In this work, the effect of a non-resonant intense laser field on the optical rectification and second and third harmonic generation in a Poschl-Teller quantum well is theoretically investigated. In this regard, the ... -
Optical coefficients in a semiconductor quantum ring: Electric field and donor impurity effects
Duque, C. M.; Acosta, Ruben E.; Morales, A. L.; Mora-Ramos, M. E.; Restrepo, R. L.; Ojeda, J. H.; Kasapoglu, E.; Duque, C. A. (ELSEVIER SCIENCE BV, 2016)The electron states in a two-dimensional quantum dot ring are calculated in the presence of a donor impurity atom under the effective mass and parabolic band approximations. The effect of an externally applied electric ... -
Simultaneous effects of hydrostatic pressure and temperature on the nonlinear optical properties in a parabolic quantum well under the intense laser field
Ungan, F.; Yesilgul, U.; Sakiroglu, S.; Mora-Ramos, M. E.; Duque, C. A.; Kasapoglu, E.; Sari, H.; Sokmen, I. (ELSEVIER SCIENCE BV, 2013)In this present study, we have theoretically investigated the effects of hydrostatic pressure and temperature on the nonlinear optical properties in a typical GaAs/Ga0.7Al0.3As parabolic quantum well under the intense laser ... -
Study of direct and indirect exciton states in GaAs-Ga1-xAlxAs quantum dots under the effects of intense laser field and applied electric field
Mora-Ramos, M. E.; Duque, C. A.; Kasapoglu, E.; Sari, H.; Sokmen, I. (SPRINGER, 2012)The effects of intense laser radiation on the exciton states in GaAs-Ga1-xAlxAs quantum dots are studied with the inclusion of applied dc electric fields oriented along the growth direction of the system. The calculations ...