Laser diodes with phase conjugate feedback

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Risø National Laboratory Four-wave mixing operation in high power diodes 0 L The nonlinear polarization is given by P= ε χ( N) E nc where χ( N) =− ( β+i)g(N) , g(N)=a(N-N 0) ω Z R=R 1 Z=0 R=0 Gain and refractive index gratings A 1 A 3 Semiconductor amplifier A 2 Electrode 0 Z=L dA1 * * =−α0A1− γ( AA 1 4 + A2A3) A4 (1A) dz * dA2 * * * * =+ α0A2 − γ( AA 1 4 + A2A3) A3 (1B) dz dA3 * * =+ α0A3+ γ( AA 1 4 + A2A3) A2 (1C) dz * dA4 * * * * =− α0A4 + γ( AA 1 4 + A2A3) A1 (1D) dz (1 − iβ ) g0 α0 =− is the effective gain 2(1 + P ) P 0 = E 0 P s 2 0 0 is the average intercavity pump intensity 2C γ=-i α0 is the coupling factor 1+ P Paul Michael Petersen, Laser Diodes with External Feedback (tutorial)
Risø National Laboratory DFWM in diodes using total internal reflection 0 Gain and refractive index gratings A 1 High reflective coating Z=0 Semiconductor amplifier Electrode L Z A 3 A 2 Z=L Antireflection coating Spatial- and temporal filtering Output beam M Paul Michael Petersen, Laser Diodes with External Feedback (tutorial)
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Laser diodes with phase conjugate feedback

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