Chai Zhijun, Gao Yachen. Ultrafast nonlinear absorption properties of borate glass doped with CdS0.2Se0.8 nanocrystal[J]. Infrared and Laser Engineering, 2017, 46(3): 321004-0321004(5). doi: 10.3788/IRLA201746.0321004
| Citation:
|
Chai Zhijun, Gao Yachen. Ultrafast nonlinear absorption properties of borate glass doped with CdS0.2Se0.8 nanocrystal[J]. Infrared and Laser Engineering, 2017, 46(3): 321004-0321004(5). doi: 10.3788/IRLA201746.0321004
|
Ultrafast nonlinear absorption properties of borate glass doped with CdS0.2Se0.8 nanocrystal
- Received Date: 2016-07-10
- Rev Recd Date:
2016-08-20
- Publish Date:
2017-03-25
-
Abstract
The nonlinear absorption properties of borate glass doped with CdS0.2Se0.8 nanocrystal (RG665) were investigated using Z-scan and pump-probe techniques with femtosecond pulses. It was found that RG665 showed strong nonlinear absorption under 130 fs laser pulses at 800 nm wavelength. By theoretically analyzing the experimental results, the nonlinear absorption of RG665 included two parts: two-photon absorption and the excited state absorption induced by two-photon absorption at 800 nm wavelength. The two-photon absorption coefficient was obtained to be about 0.05 cm/GW, the excited state absorption cross section was e=310-23 m2, and the electron lifetime on the low energy state and bottom in conduction band was 13 ps and 210 ps respectively. The research results certify that the borate glass doped with CdS0.2Se0.8 nanocrystal is a good kind of nonlinear optical material.
-
References
|
[1]
|
Scott R, Achtstein A W, Prudnikau A, et al. Two photon absorption in Ⅱ-VI semiconductors:The influence of dimensionality and size[J]. Nano Lett, 2015, 15:4985-4992. |
|
[2]
|
Baskoutas S, Terzis A F. Size-dependent band gap of colloidal quantum dots[J]. Journal of Applied Physics, 2006, 99:013708. |
|
[3]
|
Szeremeta J, Lamch L, Wawrzynczyk D, et al. Two-photon absorption and efficient encapsulation of near-infrared-emitting CdSexTe1-x quantum dots[J]. Chemical Physics, 2015, 456:93-97. |
|
[4]
|
Lupo F, Carbone L, ZavelaniRossi M, et al. Ultrafast electron-hole dynamics in core/shell CdSe/CdS dot/rod nanocrystals[J]. Nana Letters, 2009, 8(12):4582-4587. |
|
[5]
|
Singh C P, Bindra K S. Saturation and reverse saturable absorption in semiconductor doped glass and its application to parallel logic gates[J]. Optical and Quantum Electronics, 2015, 47:3313-3321. |
|
[6]
|
Prymak M V, Azhniuk Y M, Solomon A M, et al. Effect of X-ray irradiation on the optical absorption of СdSe1-xTex nanocrystals embedded in borosilicate glass[J]. Radiation Physics and Chemistry, 2012, 81:766-770. |
|
[7]
|
Chai Z, Wu W, Kong D, et al. Size-dependent electronic decays and coherent phonon of CdSeTe quantum dots in glass matrix[J]. Journal of Non-Crystalline Solids, 2013, 382:121-124. |
|
[8]
|
Liaz S, Mahendru A, Sanderson D, et al. Sensitive Measurement of optical nonlinearities using a single beam[J]. IEEE Journal of Quantum Electronics, 1990, 26(4):760-769. |
|
[9]
|
Gu B, Ji W, Patil P S, et al. Two-photon-induced excited-state absorption:theory and experiment[J]. Applied Physics Letters, 2008, 92:091118. |
|
[10]
|
Zhang F J, Zhang L M, Claus R O. Nonlinear differential ultrafast laser absorption spectroscopy observation of charge carrier dynamics of CdSxSe1-x nanocrystal doped glasses[J]. Smart Materials and Structures, 2007, 16:243-248. |
|
[11]
|
Fakis M, Tsigaridas G, Polyzos I, et al. Intensity dependent nonlinear absorption of pyrylium chromophores[J]. Chemical Physics Letters, 2001, 342:155-161. |
-
-
Proportional views
-
DownLoad: