Wide-band supercontinuum generation for sub-micron-resolution OCT by using a laser-diode-seeded amplified pulse source

Sucbei Moon, Dug Young Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

We present an ultra-wideband supercontinuum source using a dispersion-shifted fiber and an amplified diode-laser pulse source. A gain-switched DFB laser operating at 1550-nm wavelength, which provides 30-ps pulses, was used for generating the seeding pulses. And serially cascaded low-cost EDFAs were employed to boost the peak power of the pulses to more than 1 kW. Single-mode supercontinuum spanning nearly the full near-IR band was obtained by passing the amplified pulses through a dispersion-shifted fiber. By investigating the characteristics of the generated supercontinuum pulses, the walk-off between the spectral components was found to limit the effective interaction length of the spectrum-broadening effects. In order to expand further the spectral range of the output, we have examined the time-gating ASE suppression scheme and use of a high-power EDFA. And the resulted outputs have reached wavelengths of 0.8 and 0.9 μm, respectively at the short-wavelength edges. Only the blue-shifted part that can be obtained using a short-wavelength-pass filter can exhibit 3-dB bandwidth more than 500 nm in the vicinity of 1.2 μm. The supercontinuum generation scheme provides a compact and reliable way to generate ultra-wideband flat spectrum that can be useful for high-resolution OCT.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
DOIs
Publication statusPublished - 2006 May 1
EventNonlinear Frequency Generation and Conversion: Materials, Devices, and Applications V - San Jose, CA, United States
Duration: 2006 Jan 252006 Jan 26

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6103
ISSN (Print)0277-786X

Other

OtherNonlinear Frequency Generation and Conversion: Materials, Devices, and Applications V
CountryUnited States
CitySan Jose, CA
Period06/1/2506/1/26

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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    Moon, S., & Kim, D. Y. (2006). Wide-band supercontinuum generation for sub-micron-resolution OCT by using a laser-diode-seeded amplified pulse source. In Proceedings of SPIE - The International Society for Optical Engineering [61030Y] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 6103). https://doi.org/10.1117/12.645904