Conference paper
Few-cycle nonlinear mid-IR pulse generated with cascaded quadratic nonlinearities
Generating few-cycle energetic and broadband mid-IR pulses is an urgent current challenge in nonlinear optics. Cascaded second-harmonic generation (SHG) gives access to an ultrafast and octave-spanning self-defocusing nonlinearity: when ΔkL >> 2π the pump experiences a Kerr-like nonlinear index change Δn = ncascI, where ncase ∝ −d2eff/Δk, and deff is the effective quadratic nonlinearity.
Due to competing material nonlinearities nKerr the total nonlinear refractive is ncubic = ncasc + nKerr. Interestingly ncubic can become negative (self-defocusing), elegantly avoiding self-focusing problems, and making it possible to excite solitons with normal dispersion [1].
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2013 |
| Pages: | 1-1 |
| Proceedings: | 2013 Conference on Lasers & Electro-Optics Europe & the International Quantum Electronics Conference (CLEO/Europe-IQEC) |
| ISBN: | 1479905933 , 1479905941 , 1479909602 , 1557529736 , 9781479905935 , 9781479905942 , 9781479909605 and 9781557529732 |
| Types: | Conference paper |
| DOI: | 10.1109/CLEOE-IQEC.2013.6801091 |
| ORCIDs: | Bache, Morten and Zhou, Binbin |
Aerospace Bioengineering Communication, Networking and Broadcast Technologies Components, Circuits, Devices and Systems Dispersion Engineered Materials, Dielectrics and Plasmas Engineering Profession Fields, Waves and Electromagnetics Frequency conversion General Topics for Engineers Kerr-like nonlinear index change Nonlinear optics Nuclear Engineering Optical pulse compression Optical solitons Photonics and Electrooptics Power, Energy and Industry Applications SHG Ultrafast optics cascaded quadratic nonlinearity cascaded second-harmonic generation effective quadratic nonlinearity few-cycle nonlinear broadband midIR pulse generation few-cycle nonlinear energetic midIR pulse generation octave-spanning self-defocusing nonlinearity optical Kerr effect optical harmonic generation optical pulse generation optical pumping optical solitons refractive index total nonlinear refractive index ultrafast self-defocusing nonlinearity
