Frequency modulation optimization of nonlinear optical Z-scan by high repetition rate femtosecond laser

Citation

Zainal Abidin, Mohd Shahnan and Muhammad Noor, Ahmad Shukri and Mahdi, Mohd Adzir and Abdul Rashid, Suraya (2013) Frequency modulation optimization of nonlinear optical Z-scan by high repetition rate femtosecond laser. In: 4th International Conference on Photonics (ICP2013), 28-30 Oct. 2013, Equatorial Hotel Melaka, Malaysia. (pp. 90-92).

Abstract

Nonlinear optical properties of 2- (2-hydroxyethyl)-6-(morpholin-4-yl) -1H-benzo[de]isoquinoline- 1,3(2H)- dione pigment material is investigated with frequency modulation of 250 MHz femtosecond high repetition rate (HRR) laser by an optical chopper. Thermal lensing formation on the material due to thermal build up from HRR laser leads to measurement ambiguity of nonlinear refractive index (NLRI) and two-photon absorption cross section (TPACS). Optimized optical chopper frequency range of 50% duty cycle modulated laser beam effectively reduces laser contact time on the material and resulted in improved NLRI and TPACS of -8.23 × 10-18 m2/W and 2.96 GM respectively.

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Additional Metadata

Item Type:	Conference or Workshop Item (Paper)
Divisions:	Faculty of Engineering
DOI Number:	https://doi.org/10.1109/ICP.2013.6687077
Publisher:	IEEE
Keywords:	Nonlinear refractive index; Two-photon absorption cross-section; Z-scan; Thermal lensing
Depositing User:	Nabilah Mustapa
Date Deposited:	10 Jun 2019 03:48
Last Modified:	10 Jun 2019 03:48
Altmetrics:	http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1109/ICP.2013.6687077
URI:	http://psasir.upm.edu.my/id/eprint/68840
Statistic Details:	View Download Statistic

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