Giant optical second- and third-order nonlinearities at a telecom wavelength (in EN)
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 1400–1600 nm bandwidth. The second-order susceptibilityχ(2)reaches 2840 pm/V at 1440 nm, while the Kerr coefficientn2arrives at 2.8 × 10−10 cm2/W at 1460 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.
- Research Organization:
- Wayne State Univ., Detroit, MI (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- SC0022134
- OSTI ID:
- 2580199
- Journal Information:
- Optics Letters, Journal Name: Optics Letters Journal Issue: 13 Vol. 49; ISSN 0146-9592; ISSN OPLEDP
- Publisher:
- Optical Society of America (OSA)
- Country of Publication:
- United States
- Language:
- EN
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