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

Sucbei Moon; Dug Young Kim

doi:10.1117/12.645904

10 February 2006 Wide-band supercontinuum generation for sub-micron-resolution OCT by using a laser-diode-seeded amplified pulse source

Sucbei Moon, Dug Young Kim

Author Affiliations +

Proceedings Volume 6103, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications V; 61030Y (2006) https://doi.org/10.1117/12.645904
Event: Lasers and Applications in Science and Engineering, 2006, San Jose, California, United States

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.

Citation Download Citation

Sucbei Moon and Dug Young Kim "Wide-band supercontinuum generation for sub-micron-resolution OCT by using a laser-diode-seeded amplified pulse source", Proc. SPIE 6103, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications V, 61030Y (10 February 2006); https://doi.org/10.1117/12.645904

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available