Optical Review

, Volume 19, Issue 5, pp 328–331 | Cite as

Quality factor of circular laser diode beam tailored by optical interference

  • Takehiro Fukushima
  • Koichiro Sakaguchi
  • Yasunori Tokuda
Regular Papers

Abstract

The quality factor of a laser diode beam tailored by Lloyd’s mirror interference was investigated numerically and experimentally. The far and near-field patterns were analyzed by numerical calculations based on Huygens’ integral. An almost circular tailored beam was calculated to have a quality factor as low as 1.08. This beam-shaping technique was experimentally demonstrated using a commercial 640 nm laser diode and a mirror-polished GaAs substrate. The optical beam tailored by Lloyd’s mirror interference was nearly circular and its beam quality factor was measured to be 1.24. Although this measured beam quality factor is slightly higher than the numerically calculated one, it is acceptably low.

Keywords

laser diode beam shaping beam quality factor Lloyd’s mirror interference 

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References

  1. 1).
    T. Suhara: Semiconductor Laser Fundamentals (Mercel Dekker, New York, 2004) Sect. 1.4, p. 14.CrossRefGoogle Scholar
  2. 2).
    H. C. Casey, Jr. and M. B. Panish: Heterostructure Lasers (Academic Press, New York, 1978) Sect. 2.7, p. 71.Google Scholar
  3. 3).
    A. Furaya, T. Fukushima, Y. Kito, C. Anayama, M. Sugano, H. Sudo, M. Kondo, and T. Tanahashi: Electron. Lett. 30 (1994) 416.CrossRefGoogle Scholar
  4. 4).
    K. Otsuka, K. Abe, J.-Y. Ko, and T.-S. Lim: Opt. Lett. 27 (2002) 1339.ADSCrossRefGoogle Scholar
  5. 5).
    M. Kuznetsov, F. Hakimi, R. Sprague, and A. Mooradian: IEEE J. Sel. Top. Quantum Electron. 5 (1999) 561.CrossRefGoogle Scholar
  6. 6).
    T. Fukushima, K. Miyahara, and N. Nakata: IEICE Trans. Electron. E92-C (2009) 1095.ADSCrossRefGoogle Scholar
  7. 7).
    T. Fukushima, K. Sakaguchi, and Y. Tokuda: Opt. Rev. 18 (2011) 287.CrossRefGoogle Scholar
  8. 8).
    A. E. Siegman: Proc. SPIE 1224 (1990) 2.ADSCrossRefGoogle Scholar
  9. 9).
    A. E. Siegman: IEEE J. Quantum Electron. 27 (1991) 1146.ADSCrossRefGoogle Scholar
  10. 10).
    T. Taira: Laser Rev. 26 (1998) 723.CrossRefGoogle Scholar
  11. 11).
    K. Yasui, T. Kojima, S. Fujikawa, Y. Takenaka, and J. Nishimae: Laser Rev. 26 (1998) 730.CrossRefGoogle Scholar
  12. 12).
    G. Hatakoshi: Opt. Rev. 10 (2003) 307.CrossRefGoogle Scholar
  13. 13).
    A. E. Siegman: Lasers (University Science Books, Mill Valley, CA, 1986) Chap. 16, p. 626.Google Scholar

Copyright information

© The Optical Society of Japan 2012

Authors and Affiliations

  • Takehiro Fukushima
    • 1
  • Koichiro Sakaguchi
    • 1
  • Yasunori Tokuda
    • 1
  1. 1.Department of Information and Communication EngineeringOkayama Prefectural UniversitySoja, OkayamaJapan

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