Abstract
We demonstrate an ultra-high-speed phase-sensitive time-wavelength-domain optical coherence reflectometer with a stretched pulse supercontinuum source. A pulsed fiber laser operating at 10MHz repetition rate was used to generate a pulsed supercontinuum of 30 ps pulse duration by using a nonlinear optical fiber. The supercontinuum pulses are stretched into 70 ns pulses with a highly dispersive fiber. With this stretched pulse source, we have built a phase-sensitive optical coherence reflectometer that measures the spectral interferogram of reflected light. By using the linear relation between the wavelength and the temporal position in a linearly chirped pulse, ultra-high-speed spectrum measurement can be obtained with this method in the time domain. We have demonstrated ultra-high-speed two-dimensional surface profiling for a standard image target and high-speed single-point monitoring for a fixed point under vibrational motion. It is shown that the measurement speed for the position of a single point can be as fast as 2:5MHz, while the position accuracy can be better than 4:49 nm.
| Original language | English |
|---|---|
| Pages (from-to) | 4000-4004 |
| Number of pages | 5 |
| Journal | Applied Optics |
| Volume | 50 |
| Issue number | 21 |
| DOIs | |
| Publication status | Published - 2011 Jul 20 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
Cite this
}
Ultra-high-speed phase-sensitive optical coherence reflectometer with a stretched pulse supercontinuum source. / Song, Hoseong; Cho, Seung Bum; Kim, Dong Uk; Jeong, Sungho; Kim, Dug Young.
In: Applied Optics, Vol. 50, No. 21, 20.07.2011, p. 4000-4004.Research output: Contribution to journal › Article
TY - JOUR
T1 - Ultra-high-speed phase-sensitive optical coherence reflectometer with a stretched pulse supercontinuum source
AU - Song, Hoseong
AU - Cho, Seung Bum
AU - Kim, Dong Uk
AU - Jeong, Sungho
AU - Kim, Dug Young
PY - 2011/7/20
Y1 - 2011/7/20
N2 - We demonstrate an ultra-high-speed phase-sensitive time-wavelength-domain optical coherence reflectometer with a stretched pulse supercontinuum source. A pulsed fiber laser operating at 10MHz repetition rate was used to generate a pulsed supercontinuum of 30 ps pulse duration by using a nonlinear optical fiber. The supercontinuum pulses are stretched into 70 ns pulses with a highly dispersive fiber. With this stretched pulse source, we have built a phase-sensitive optical coherence reflectometer that measures the spectral interferogram of reflected light. By using the linear relation between the wavelength and the temporal position in a linearly chirped pulse, ultra-high-speed spectrum measurement can be obtained with this method in the time domain. We have demonstrated ultra-high-speed two-dimensional surface profiling for a standard image target and high-speed single-point monitoring for a fixed point under vibrational motion. It is shown that the measurement speed for the position of a single point can be as fast as 2:5MHz, while the position accuracy can be better than 4:49 nm.
AB - We demonstrate an ultra-high-speed phase-sensitive time-wavelength-domain optical coherence reflectometer with a stretched pulse supercontinuum source. A pulsed fiber laser operating at 10MHz repetition rate was used to generate a pulsed supercontinuum of 30 ps pulse duration by using a nonlinear optical fiber. The supercontinuum pulses are stretched into 70 ns pulses with a highly dispersive fiber. With this stretched pulse source, we have built a phase-sensitive optical coherence reflectometer that measures the spectral interferogram of reflected light. By using the linear relation between the wavelength and the temporal position in a linearly chirped pulse, ultra-high-speed spectrum measurement can be obtained with this method in the time domain. We have demonstrated ultra-high-speed two-dimensional surface profiling for a standard image target and high-speed single-point monitoring for a fixed point under vibrational motion. It is shown that the measurement speed for the position of a single point can be as fast as 2:5MHz, while the position accuracy can be better than 4:49 nm.
UR - http://www.scopus.com/inward/record.url?scp=79960622180&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79960622180&partnerID=8YFLogxK
U2 - 10.1364/AO.50.004000
DO - 10.1364/AO.50.004000
M3 - Article
C2 - 21772383
AN - SCOPUS:79960622180
VL - 50
SP - 4000
EP - 4004
JO - Applied Optics
JF - Applied Optics
SN - 1559-128X
IS - 21
ER -