Titanium dioxide-based Q-switched dual wavelength in the 1 micron region

H. Ahmad; M. A. M. Salim; Z. A. Ali; M. F. Ismail; K. Thambiratnam; A. A. Latif; N. Nayan; S. W. Harun

doi:10.3788/COL201614.091403

Journals >Chinese Optics Letters >Volume 14 >Issue 9 >Page 091403 > Article

Chinese Optics Letters
Vol. 14, Issue 9, 091403 (2016)

Titanium dioxide-based Q-switched dual wavelength in the 1 micron region

H. Ahmad^1、*, M. A. M. Salim¹, Z. A. Ali¹, M. F. Ismail¹, K. Thambiratnam¹, A. A. Latif², N. Nayan³, and S. W. Harun¹

Author Affiliations

¹Photonics Research Centre (PRC), University of Malaya, Kuala Lumpur 50603, Malaysia

²Department of Physics, University Putra Malaysia, Serdang 43400, Malaysia

³Faculty of Electrical and Electronic Engineering, Universiti Tun Hussein Onn Malaysia, Johor Baru 86400, Malaysia

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DOI: 10.3788/COL201614.091403 Cite this Article Set citation alerts

H. Ahmad, M. A. M. Salim, Z. A. Ali, M. F. Ismail, K. Thambiratnam, A. A. Latif, N. Nayan, S. W. Harun. Titanium dioxide-based Q-switched dual wavelength in the 1 micron region[J]. Chinese Optics Letters, 2016, 14(9): 091403 Copy Citation Text

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Fig. 1. (a) FESEM image, (b) UV-Vis absorbance, (c) linear absorption, and (d) XRD pattern of TiO2.

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Fig. 2. Configuration for measuring (a) the nonlinear absorption of TiO2 and (b) the saturable absorption distinctive of the TiO2 SA.

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Fig. 3. Experimental setup of TiO2-based SA in 1 μm region.

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Fig. 4. Changes in pulse duration at (a) 143.90 and (b) 231.60 mW with a frequency of 31.2 and 62.4 kHz, respectively.

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Fig. 5. Distinctive properties of Q-switching: (a) optical domain, (b) pulse duration, (c) pulse width, and (d) frequency domain at a pump LD power of 188.0 mW.

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Fig. 6. Correlation between (a) the repetition rate and pulse width and (b) the pulse energy and the average output power corresponding to the pump power.

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