FOCUSED BEAM BROFILING FROM A TERAHERTZ QUANTUM CASCADE LASER

Authors

  • Nor Kamilah Saat Department of Physics, Faculty of Science, Universiti Putra Malaysia
  • Paul Dean School of Electronic and Electrical Engineering, University of Leeds, Woodhouse Lane Leeds LS2 9JT, UK
  • Suraj P. Khanna School of Electronic and Electrical Engineering, University of Leeds, Woodhouse Lane Leeds LS2 9JT, UK
  • Mohamed Salih School of Electronic and Electrical Engineering, University of Leeds, Woodhouse Lane Leeds LS2 9JT, UK
  • Edmund Harold Linfield School of Electronic and Electrical Engineering, University of Leeds, Woodhouse Lane Leeds LS2 9JT, UK
  • Alexander Giles Davies School of Electronic and Electrical Engineering, University of Leeds, Woodhouse Lane Leeds LS2 9JT, UK

DOI:

https://doi.org/10.11113/jt.v78.7459

Keywords:

Knife edge technique, Gaussian beam, beam profiling, terahertz quantum cascade laser

Abstract

A quick, simple and inexpensive method of profiling the focused beam from terahertz quantum cascade laser (THz QCL) is presented. Using knife edge technique beam width and astigmatism of the THZ QCL imaging system have successfully been obtained.

References

Chamberlin, D. R., Robrish, P. R., Trutna, W. R., Scalari, G., Giovannini, M., Ajili, L. and Faist, J. 2005. Imaging at 3.4 THz with a Quantum Cascade Laser. Optics Latters. 44: 21-125.

Marcos, A. C., Robens, S. E., Daniel, P. P. and Oliveira, P. C. D. 2009. Measurement of Gaussian Laser Beam Radius using the Knife-Edge Technique: Improvement on Data Analysis. Applied Optics. 48: 393-396.

Paul, D., Mohamed, U. S., Edmund H. L. and Davies, A. G. 2007. Three-Dimensional Characterization of the Gaussian Beam from a Terahertz Quantum Cascade Laser. Conference on Lasers and electro-optics (CLEO 07).

McCally, R. L. 1984. Measurement of Gaussian Beam Parameters. Applied Optics. 23: 2227.

Shayler, P. J. 1978. Laser Beam Distribution in the Focal Region. Applied Optics. 23: 2673-2674.

Carry, A. Photon Inc. Beam Profiling. 1-8.

Luo, H., Laframboise, S. R., Wasilewski, Z. R., Aers, G. C., Liu, H. C. and Cao, J. C. 2007. Terahertz Quantum-Cascade Lasers based on a Three-Well Active Module. Applied Physics Letters. 90: 041112-3.

Skinner, D. R. and Whitcher, R. E. 1972. Measurement of the Radius of a High-Power Beam near the Focus of a Lens. Journal pf Physics E. 22: 3406-3410.

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Published

2016-02-21

Issue

Vol. 78 No. 3: March 2016

Section

Science and Engineering

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.

How to Cite

FOCUSED BEAM BROFILING FROM A TERAHERTZ QUANTUM CASCADE LASER. (2016). Jurnal Teknologi (Sciences & Engineering), 78(3). https://doi.org/10.11113/jt.v78.7459