SPECTROSCOPY CHARACTERISTICS OF QUASI THREE LEVEL LASER TRANSITION INDUCED BY FLASHLAMP PUMPED ND:YAG LASER
DOI:
https://doi.org/10.11113/jt.v57.1536Keywords:
Quasi three level laser, thermal boosted line, four level laser transition, Nd, YAG, flashlamp, cross sectionAbstract
Laser transition at 946 nm from flashlamp pumped Nd:YAG crystal is investigated. The fluorescence radiation induced after pumping is observed via spectrometer. The spectra comprised of absorption and emission lines. The optimum absorption fluorescence is found to be at thermal boosted line of 882 nm. This is an indicator of less heat generation involve in the laser transition. This is confirmed by the generation quasi three level transition at 946 nm. The stimulated emission cross section of 946 nm is estimated to be three times greater than that reported by previous researcher.References
G. A. Kumar, J. Lu, A. A. Kaminskii, K.-I Ueda, H. Yagi, T. Yanagitani, and N. V. Unnikrishnan. 2004. Spectroscopic and Stimulated Emission Characteristics of Nd3+ in Transparent YAG Ceramics. IEEE J. Quantum Electron. 40:747-758.
S. Singh, R. G. Smith, LO. G. Van Uter. 1974. Stimulated-emission Cross Section and Fluorescent Quantum Efficiency of Nd3+ In Yttrium Aluminum Garnet at Room Temperature. Phys Rev B. 10: 2566-2572.
T. Kushida, H. M. Marcos, J. E. Geusic. 1968. Laser Transition Cross-section and Fluorescent Branching Ratio for Nd3+ in Yttrium Aluminum Garnet. Phys Rev. 167: 289-291.
A. Rapaport, S. Zhao, G. Xiao, A. Howard and M. Bass. 2002. Temperature Dependence of the 1.06-µm Stimulated Emission Cross Section of Neodymium in YAG and in GSGG. J. Appl. Phys. 41:7052-7057.
J. Dong, A. Rapaport, M. Bass, F. Szipocs and K.-I Ueda. 2005. Temperature-dependent Stimulated Emission Cross Section and Concentration Quenching in Highly Doped Nd3+:YAG Crystals. Phys. Stat. Sol. (a). 13: 2565-2573.
D. K. Sardar, R. M. Yow, J. B. Gruber, T. H. Allik, B. Zandi. 2006. Stark Components of Lower-Lying Manifolds and Emission Cross-Sections of Intermanifold and Inter-Stark Transitions of Nd+3 (4f3) in Polycrystalline Ceramic Garnet Y3Al5O12. Journal of Luminescence. 116: 145-150.
W. Koechner, 2006. Solid-state Laser Engineering. 6th Revised and Updated Version. USA: Springer..
R. Zainal, A. R. Tamuri, Y. M. Duad and N. Bidin. 2010. Improvement in Ignition and Simmer Current Supply Into Xenon Flashlamp. American Institute of Physics Proceeding, CP 1250:133-136.
D. E. Perlman. 1966. Characteristics and Operation of Xenon Filled Linear Flashlamps. Review of Scientific Instruments. 37:340-343,
N. Pavel, Simultaneous Dual-Wavelength Emission at 0.90 and 1.06 µm in Nd-doped Laser Crystals. Laser Physics, 20:215-221, 2010.
Downloads
Issue
Section
License
Copyright of articles that appear in Jurnal Teknologi belongs exclusively to Penerbit Universiti Teknologi Malaysia (Penerbit UTM Press). This copyright covers the rights to reproduce the article, including reprints, electronic reproductions, or any other reproductions of similar nature.
