Abstract:
Optical logic gate (1) having a second -harmonic generator element (15) that receives a first (sii) and a second optical input signal (si2) respectively having a first (?1) and a second angular frequency (?2) and respectively having a first (P; S) and a second (P; S) polarization, and which provides a second-harmonic optical signal (su3) having a third angular frequency (2?i, ?1+?2) and a third (P; S) polarization. The third angular frequency (2?i, ?1+?2) is equal to the sum of the first (?1) and the second angular frequency (?2). The third (P; S) polarization is a function of the first (P; S) and the second (P; S) polarization. The second-harmonic generator element (15) includes a second-harmonic generator layer (22) in a material having a non-null second-order optical tensor.
Abstract:
Optical logic gate (1) having a second -harmonic generator element (15) that receives a first (s ii ) and a second optical input signal (s i2 ) respectively having a first (ω 1 ) and a second angular frequency (ω 2 ) and respectively having a first (P; S) and a second (P; S) polarization, and which provides a second-harmonic optical signal (s u3 ) having a third angular frequency (2ω i , ω 1 +ω 2 ) and a third (P; S) polarization. The third angular frequency (2ω i , ω 1 +ω 2 ) is equal to the sum of the first (ω 1 ) and the second angular frequency (ω 2 ). The third (P; S) polarization is a function of the first (P; S) and the second (P; S) polarization. The second-harmonic generator element (15) includes a second-harmonic generator layer (22) in a material having a non-null second-order optical tensor.
Abstract:
Described herein is a method for determining second- order nonlinear optical coefficients of a material. The method envisages the steps of providing a specimen (1;35) made at least in part of the material, causing a first optical signal (Si1) and a second optical signal (Si2) having, respectively, a first pulsation and a second pulsation, and a first polarization state and a second polarization state, to impinge upon the specimen in such a way that the specimen generates a second-harmonic optical signal (su3) having a third pulsation equal to the sum of the first and second pulsations, and a third polarization state that is a function of the first and second polarization states. The method further envisages the step of determining a plurality of measurements of power corresponding to the second-harmonic optical signal, and the step of determining the second-order nonlinear optical coefficients on the basis of the plurality of measurements of power. In addition, the method envisages performing a plurality of measurements of power of the second-harmonic optical signal as the first polarization state and the second polarization state vary.
Abstract:
Described herein is a method for determining second- order nonlinear optical coefficients of a material. The method envisages the steps of providing a specimen (1;35) made at least in part of the material, causing a first optical signal (S i1 ) and a second optical signal (S i2 ) having, respectively, a first pulsation and a second pulsation, and a first polarization state and a second polarization state, to impinge upon the specimen in such a way that the specimen generates a second-harmonic optical signal (s u3 ) having a third pulsation equal to the sum of the first and second pulsations, and a third polarization state that is a function of the first and second polarization states. The method further envisages the step of determining a plurality of measurements of power corresponding to the second-harmonic optical signal, and the step of determining the second-order nonlinear optical coefficients on the basis of the plurality of measurements of power. In addition, the method envisages performing a plurality of measurements of power of the second-harmonic optical signal as the first polarization state and the second polarization state vary.
Abstract:
Optical logic gate (1) having a second -harmonic generator element (15) that receives a first (sii) and a second optical input signal (si2) respectively having a first (?1) and a second angular frequency (?2) and respectively having a first (P; S) and a second (P; S) polarization, and which provides a second-harmonic optical signal (su3) having a third angular frequency (2?i, ?1+?2) and a third (P; S) polarization. The third angular frequency (2?i, ?1+?2) is equal to the sum of the first (?1) and the second angular frequency (?2). The third (P; S) polarization is a function of the first (P; S) and the second (P; S) polarization. The second-harmonic generator element (15) includes a second-harmonic generator layer (22) in a material having a non-null second-order optical tensor.