Giant optical second- and third-order nonlinearities at a telecom wavelength.
Opt Lett
; 49(13): 3725-3728, 2024 Jul 01.
Article
in En
| MEDLINE
| ID: mdl-38950252
ABSTRACT
A material platform that excels in both optical second- and third-order nonlinearities at a telecom wavelength is theoretically and experimentally demonstrated. In this TiN-based coupled metallic quantum well structure, electronic subbands are engineered to support doubly resonant inter-subband transitions for an exceptionally high second-order nonlinearity and provide single-photon transitions for a remarkable third-order nonlinearity within the 1400-1600â
nm bandwidth. The second-order susceptibility χ(2) reaches 2840â
pm/V at 1440â
nm, while the Kerr coefficient n2 arrives at 2.8 × 10-10â
cm2/W at 1460â
nm. The achievement of simultaneous strong second- and third-order nonlinearities in one material at a telecom wavelength creates opportunities for multi-functional advanced applications in the field of nonlinear optics.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Opt Lett
/
Opt. lett. (Online)
/
Optics letters (Online)
Year:
2024
Document type:
Article
Country of publication:
Estados Unidos