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a) The magnitude of polarization is given as P=OXE. Show that the higher-order (nonlinear) terms can be expressed as P = €0 (X1E+X2E2+x3E3+ ...). Identify the linear and nonlinear terms. b) Explain the physical mechanism of phase-matching by considering four-wave mixing.

a) The magnitude of polarization is given as P=OXE. Show that the higher-order (nonlinear) terms can be expressed as P = €0 (X1E+X2E2+x3E3+ ...). Identify the linear and nonlinear terms. b) Explain the physical mechanism of phase-matching by considering four-wave mixing.

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a) The magnitude of polarization is given as P=OXE. Show that the higher-order (nonlinear) terms can be expressed as P = €0 (X1E+X2E2+x3E3+ ...). Identify the linear and nonlinear terms. b) Explain the physical mechanism of phase-matching by considering four-wave mixing.
Transcribed Image Text:a) The magnitude of polarization is given as P=OXE. Show that the higher-order (nonlinear) terms can be expressed as P = €0 (X1E+X2E2+x3E3+ ...). Identify the linear and nonlinear terms. b) Explain the physical mechanism of phase-matching by considering four-wave mixing.
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