Raman gain and nonlinear optical absorption measurements in a low-loss silicon waveguide

Rong, Haisheng; Liu, Ansheng; Nicolaescu, Remus; Paniccia, Mario; Cohen, Oded; Hak, Dani
September 2004
Applied Physics Letters;9/20/2004, Vol. 85 Issue 12, p2196
Academic Journal
We fabricated a low-loss (∼0.22 dB/cm) rib waveguide (WG) in silicon-on-insulator with a small effective core area of ∼1.57 μm2 and measured the stimulated Raman scattering gain in the WG. We obtained 2.3 dB Raman gain in a 4.8-cm-long S-shaped WG using a 1455 nm pump laser with a cw power of 0.9 W measured before the WG. In addition, we observed nonlinear dependence of Raman gain and optical propagation loss as a function of the pump power. Our study shows that this mainly is due to two-photon absorption (TPA) induced free carrier absorption in the silicon WG. We experimentally determined the TPA induced free carrier lifetime of 25 ns, which agrees well with our modeling.


Related Articles

  • Polarization dependent two-photon properties in an organic crystal. Hong-Hua Fang; Jie Yang; Ran Ding; Qi-Dai Chen; Lei Wang; Hong Xia; Jing Feng; Yu-Guang Ma; Hong-Bo Sun // Applied Physics Letters;9/6/2010, Vol. 97 Issue 10, p101101 

    The dependence of the fluorescence on the excitation beam polarization under two-photon excitation was studied in a 1,4-bis(R-cyano-4-diphenylaminostyryl)-2,5-diphenylbenzene organic crystal. The crystal shows strong response to the polarization, especially when the pump intensity was increased....

  • All optical switching in henna thin film. Henari, Fryad; Jasim, Khalil // Applied Physics B: Lasers & Optics;Aug2013, Vol. 112 Issue 2, p261 

    The optical nonlinearity in henna (Lawson (2- hydroxyl-1,4 naphthoquinone) film was utilized to demonstrate all optical switching. The nonlinear absorption of the henna film was calculated by measuring the transmission of the laser beam ( λ = 488 nm) as a function of incident light...

  • Two-photon absorption in InP substrates in the 1.55 μm range. Vignaud, D.; Lampin, J. F.; Mollot, F. // Applied Physics Letters;7/12/2004, Vol. 85 Issue 2, p239 

    The nonlinear optical absorption has been studied in three different InP substrates (semi-insulating Fe-doped, n-type S-doped, and p-type Zn-doped) by subpicosecond pump-probe differential transmission experiments at 1.6 μm. A strong negative differential transmission peak is observed at zero...

  • Nonlinear Absorption in Waveguides. ROSENBERG, ARMAND; SHIRK, JAMES S. // Nonlinear Optics, Quantum Optics: Concepts in Modern Optics;2010, Vol. 40 Issue 1-4, p137 

    We model the transmission of light in a nonlinear multimode waveguide with a core size compatible with imaging optical limiters, where the nonlinearity is assumed to be associated with a two-photon absorption. We compare the propagation of both individual spatial modes and Gaussian beams, in...

  • Assessment of mode-mixing and Herzberg-Teller effects on two-photon absorption and resonance hyper-Raman spectra from a time-dependent approach. HuiLi Ma; Yi Zhao; WanZhen Liang // Journal of Chemical Physics;3/7/2014, Vol. 140 Issue 10, p094107-1 

    A time-dependent approach is presented to simulate the two-photon absorption (TPA) and resonance hyper-Raman scattering (RHRS) spectra including Duschinsky rotation (mode-mixing) and Herzberg-Teller (HT) vibronic coupling effects. The computational obstacles for the excited-state geometries,...

  • Non-resonant below-bandgap two-photon absorption in quantum dot solar cells. Tian Li; Dagenais, Mario // Applied Physics Letters;4/30/2015, Vol. 106 Issue 17, p1 

    We study the optically nonlinear sub-bandgap photocurrent generation facilitated by an extended tailing distribution of states in an InAs/GaAs quantum dots (QDs) solar cell. The tailing states function as both the energy states for low energy photon absorption and the photocarriers extraction...

  • Third-Order Nonlinear Optical Study on Coumarin Derivative at 1064 nm Wavelength Excitation using Z-Scan Technique. Sharafudeen, K. N.; Vijayakumar, S.; Adithya, A.; Sudheesh, P.; Kalluraya, B.; Chandrasekharan, K. // AIP Conference Proceedings;10/20/2011, Vol. 1391 Issue 1, p709 

    We have prepared the conjugated organic material named coumarin derivative (3-{(2E)-3-[4-(dimethylamino)phenyl]prop-2-enoyl}-2H-chromen-2-one) in dimethyl formamide (DMF), solution and investigated their nonlinear optical transmission by the open-aperture and closed aperture z-scan technique,...

  • Solvent effects on resonance Raman and hyper-Raman scatterings for a centrosymmetric distyrylbenzene and relationship to two-photon absorption. Leng, Weinan; Bazan, Guillermo C.; Kelley, Anne Myers // Journal of Chemical Physics;1/28/2009, Vol. 130 Issue 4, pN.PAG 

    Resonance Raman (RR) and resonance hyper-Raman (RHR) spectra have been obtained for a nominally centrosymmetric dialkylammonium-substituted distyrylbenzene that was previously shown to exhibit a strong solvent polarity effect on its two-photon absorption strength. Spectra have been obtained in...

  • Two-photon fluorescence excitation with a microlens fabricated on the fused silica chip by femtosecond laser micromachining. Fei He; Ya Cheng; Lingling Qiao; Chen Wang; Zhizhan Xu; Sugioka, Koji; Midorikawa, Katsumi; Ji Wu // Applied Physics Letters;1/25/2010, Vol. 96 Issue 4, p041108 

    We report on the fabrication of a microlens on a fused silica chip with excellent optical performance by femtosecond laser microfabrication. We show, both in theory and experimentally, that the fabricated microlens offers a high resolution approaching the optical diffraction limit. Moreover,...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics