Journal of the Optical Society of Korea

Optical Society of Korea (한국광학회)
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Compact Infrared/Visible Laser Transmitter Featuring an Extended Detectable Trajectory

  • Kim, Haeng-In (Department of Electronic Engineering, Kwangwoon University) ;
  • Lee, Hong-Shik (Department of Electronic Engineering, Kwangwoon University) ;
  • Lee, Sang-Shin (Department of Electronic Engineering, Kwangwoon University)
  • Received : 2012.09.06
  • Accepted : 2012.10.19
  • Published : 2012.12.25
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Abstract

A miniaturized laser beam transmitter, in which a visible laser module at ${\lambda}$=650 nm is precisely stacked upon an infrared (IR) module at ${\lambda}$=905 nm, has been proposed and constructed to provide an IR collimated beam in conjunction with a collinear monitoring visible beam. In particular, the IR beam is selectively dispersed through a perforated sheet diffuser, so as to create a rapidly diverging close-range beam in addition to a highly defined long-range beam simultaneously. The complementary close-range beam plays a role in mitigating the blind region in the vicinity of the transmitter, which is inevitably missed by the main long-range beam, thereby uniformly extending the transmitter's effective trajectory that is sensed by a receiver. The proposed transmitter was designed through numerical simulations and then fabricated by incorporating a diffuser sheet, perforated with an aperture of 2 mm. For the manufactured transmitter, the IR long-range beam was observed to have divergences of ~2.3 and 1.6 mrad in the fast and slow axes, respectively, while the short-range beam yielded a divergence of ~24 mrad. The angular alignment between the long-range IR and visible beams was as accurate as ~0.5 mrad. According to an outdoor feasibility test involving a receiver, the combination of the IR long- and short-range beams was proven to achieve a nearly uniform trajectory over a distance ranging up to ~600 m, with an average detectable cross-section of ${\sim}60{\times}80cm^2$.

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References

  1. I. Miyamoto, K. Cvecek, Y. Okamoto, M. Schmidt, and H. Helvajian, "Characteristics of laser absorption and welding in FOTURAN glass by ultrashort laser pulses," Opt. Express 19, 22961-22973 (2011). https://doi.org/10.1364/OE.19.022961
  2. Y. U. Lee, S. K. Lee, and J. I. Youn, "Optical spectroscopic analysis of muscle spasticity for low-level laser therapy," J. Opt. Soc. Korea 15, 373-379 (2011). https://doi.org/10.3807/JOSK.2011.15.4.373
  3. J. C. Juarez, A. Dwivedi, A. R. Hammons, S. D. Jones, V. Weerackody, and R. A. Nichols, "Free space optical communications for next-generation military networks," IEEE Commun. Mag. 44, 46-51 (2006).
  4. A. K. Majumdar and J. C. Ricklin, Free-space Laser Communications Principles and Advances (Springer Science, New York, USA, 2008).
  5. M. S. Shahriar, J. Riccobono, M. Kleinschmit, and J. T. Shen, "Coherent and incoherent beam combination using thick holographic substrates," Opt. Commun. 220, 75-83 (2003). https://doi.org/10.1016/S0030-4018(03)01371-3
  6. A. P. Vandevender and P. G. Kwiat, "Quantum transduction via frequency upconversion," J. Opt. Soc. Am. B 24, 295-299 (2007). https://doi.org/10.1364/JOSAB.24.000295
  7. O. Andrusyak, V. Smirnov, G. Venus, and L. Glebov, "Beam combining of lasers with high spectral density using volume Bragg gratings," Opt. Commun. 282, 2560-2563 (2009). https://doi.org/10.1016/j.optcom.2009.03.019
  8. L. Ali, S. M. J. Akhtar, S. Mehmood, M. Ashraf, S. I. Bhatti, F. Ahmed, A. Ilyas, and S. H. Khan, "Design and development of an optical beam splitter assembly and high precision colinearity measurements of laser beams," Opt. Laser Technol. 44, 549-554 (2012). https://doi.org/10.1016/j.optlastec.2011.08.024
  9. C. Bellanger, A. Brignon, B. Toulon, J. Primot, F. Bouamrane, T. Bouvet, S. Megtert, L. Quetel, and T. Allain, "Design of a fiber-collimated array for beam combining," Opt. Eng. 50, 025005-1-025005-7 (2011). https://doi.org/10.1117/1.3537968
  10. H. S. Lee, S. S. Lee, and Y. S. Son, "CWDM based HDMI interconnect incorporating passively aligned POF linked optical subassembly modules," Opt. Express 19, 15380-15387 (2011). https://doi.org/10.1364/OE.19.015380
  11. J. Y. Park, H. S. Lee, S. S. Lee, and Y. S. Son, "Passively aligned transmit optical subassembly module based on a WDM incorporating VCSELs," IEEE Photon. Technol. Lett. 22, 1790-1792 (2010). https://doi.org/10.1109/LPT.2010.2085428
  12. H. S. Lee, H. I. Kim, and S. S. Lee, "Compact laser transmitter delivering a long-range infrared beam aligned with a monitoring visible beam," Appl. Opt. 51, 3936-39440 (2012). https://doi.org/10.1364/AO.51.003936
  13. C. Dawson, F. W. Healey, and L. O. Taylor, "Laser diode optical system," U.S. patent 4712885 (1987).
  14. MILES Communication Code (MCC), PMT 90-S002M standard, Feb. 8, 2011, http://www.peostri.army.mil/PRODUCTS/MCC/ECP_FILES/MCC_Standard_PMT_90‑S002M‑8Feb2011.pdf.

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