Modeling Light-Matter Interaction in Photonics with COMSOL®

Duration: 59:38

Watch this archived webinar, originally hosted by IEEE Spectrum, to learn about modeling light-matter interactions with the COMSOL Multiphysics® software for photonics use cases.

In this presentation, Professor Alex Kildishev from Purdue University shares an approach for accurately modeling linear optical dispersion, nonlinear optics effects, and gain in light-matter interaction. He discusses generalizing numerical descriptions for more efficient photonics time-domain simulations, shares how to modify models with custom equations, and demonstrates modeling optical effects in the time domain.

Tip: Browse for upcoming live webinars here.

Chapter Selection

Introduction (0:00) Generalizing Light-Matter Interactions for Photonics (1:57) Introduction: Multiphysics of Light-Matter Interaction (2:39) Introduction: Carrier Kinetics in Non-Linear Optics (4:38) What is Saturable Absorption (SA)? (6:09) Multiphysics Framework with Carrier Kinetics (8:46) Setting up the Multiphysics Framework (11:00) 4-Level SA: What to Expect? (13:28) Multiphysics Model #1: 4-Level SA (14:10) RSA Mechanism (23:27) RSA Numerical Modeling: Beer-Lambert Law (25:55) Multiphysics Framework with Carrier Kinetics 2 (26:47) 4-Level RSA: What to Expect? (27:59) Setting up the Multiphysics Framework 2 (29:38) Multiphysics Model #2: 4-Level RSA (30:30) Run Your Models Faster with Precision (38:33) BDF Time-Step: “Manual” vs. “Strict” (40:06) Time-Step “Manual”: BDF vs. Generalized Alpha (41:23) Generalized Alpha Half-Time-Step - “Manual” vs. “Strict” (41:41) Plasmon Enhanced RSA (42:32) Conclusions and Outlooks (45:04) Modeling Dispersive and Nonlinear Optics with the Wave Optics Module, an add-on to COMSOL Multiphysics® (47:31) Ways to Model Dispersive Materials (48:17) Optical Material Library (49:15) Frequency-Domain Pre-Defined Dispersive Material Models (50:13) User-Defined Functions (50:51) Ways to Model Dispersive Materials 2 (51:40) Drude-Lorentz Dispersion Model (52:16) Modeling Nonlinear Optics (53:21) Q&A (54:53)