Title :
Tunable multi-photon absorption cross-sections using seeded CdSe/CdS nanorod heterostructures
Author :
Sum, Tze Chien ; Xing, Guichuan ; Chou, Kok Loong ; Huan, Cheng Hon Alfred ; Chakrabortty, Sabyasachi ; Chan, Yinthai
Author_Institution :
Div. of Phys. & Appl. Phys., Nanyang Technol. Univ., Singapore, Singapore
Abstract :
A clear strategy to enhance the MPA cross-sections whilst independently tuning the emissive wavelengths of semiconductor QDs using seeded CdSe/CdS nanorod heterostructures is presented. TPA cross-sections as large as 2-3 orders and two-photon pumped ASE with threshold fluence 1-2 orders smaller compared to CdSe/CdS QDs were achieved using these heterostructures.
Keywords :
II-VI semiconductors; cadmium compounds; multiphoton processes; nanophotonics; nanorods; optical pumping; optical tuning; photoluminescence; semiconductor quantum dots; superradiance; wide band gap semiconductors; CdSe-CdS; emissive wavelength tuning; nanorod heterostructures; semiconductor quantum dots; tunable multiphoton absorption cross-sections; two-photon pumped ASE; Absorption; Fluorescence; Imaging; Laser tuning; Radiative recombination; (160.4236) Nanomaterials; (190.4180) Multiphoton processes; (300.6530) Spectroscopy, ultrafast;
Conference_Titel :
Photonics Conference (PHO), 2011 IEEE
Conference_Location :
Arlington, VA
Print_ISBN :
978-1-4244-8940-4
DOI :
10.1109/PHO.2011.6110620
