Abstract
Recently obtained results of optical limiting studies with picosecond and nanosecond laser pulses in a nonlinear organic fiber core liquid L34 are analyzed with a model that accounts for linear, two-photon, intermediate, and excited-state absorptions. Explicit expressions for the laser induced molecular level density changes, and the nonlinear transmission and optical limiting of picosecond laser pulses are obtained. These theoretical considerations and experimental results enable us to characterize the limiting effectiveness of L34 and several nonlinear fiber core liquids. In particular, the roles played by two-photon, intermediate and excited-state absorptions of picosecond and nanosecond laser pulse pulses through ILC cored fibers and bulk films are thoroughly examined. In the nanosecond time scale, significant contributions from thermal/density effects are detected. Together with new insights into the complex intensity-dependent nonlinear transmission in the liquid fiber cores, we have also demonstrated the feasibility of using such fiber arrays for limiting picosecond and nanosecond laser pulses to below the eye/sensor damage level.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 517-531 |
| Number of pages | 15 |
| Journal | Chemical Physics |
| Volume | 245 |
| Issue number | 1-3 |
| DOIs | |
| State | Published - Jul 1 1999 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry
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Molecular photonics of a highly nonlinear organic fiber core liquid for picosecond-nanosecond optical limiting application. / Khoo, Iam-choon; Chen, P. H.; Wood, M. V.; Shih, Min Yi.
In: Chemical Physics, Vol. 245, No. 1-3, 01.07.1999, p. 517-531.Research output: Contribution to journal › Article
TY - JOUR
T1 - Molecular photonics of a highly nonlinear organic fiber core liquid for picosecond-nanosecond optical limiting application
AU - Khoo, Iam-choon
AU - Chen, P. H.
AU - Wood, M. V.
AU - Shih, Min Yi
PY - 1999/7/1
Y1 - 1999/7/1
N2 - Recently obtained results of optical limiting studies with picosecond and nanosecond laser pulses in a nonlinear organic fiber core liquid L34 are analyzed with a model that accounts for linear, two-photon, intermediate, and excited-state absorptions. Explicit expressions for the laser induced molecular level density changes, and the nonlinear transmission and optical limiting of picosecond laser pulses are obtained. These theoretical considerations and experimental results enable us to characterize the limiting effectiveness of L34 and several nonlinear fiber core liquids. In particular, the roles played by two-photon, intermediate and excited-state absorptions of picosecond and nanosecond laser pulse pulses through ILC cored fibers and bulk films are thoroughly examined. In the nanosecond time scale, significant contributions from thermal/density effects are detected. Together with new insights into the complex intensity-dependent nonlinear transmission in the liquid fiber cores, we have also demonstrated the feasibility of using such fiber arrays for limiting picosecond and nanosecond laser pulses to below the eye/sensor damage level.
AB - Recently obtained results of optical limiting studies with picosecond and nanosecond laser pulses in a nonlinear organic fiber core liquid L34 are analyzed with a model that accounts for linear, two-photon, intermediate, and excited-state absorptions. Explicit expressions for the laser induced molecular level density changes, and the nonlinear transmission and optical limiting of picosecond laser pulses are obtained. These theoretical considerations and experimental results enable us to characterize the limiting effectiveness of L34 and several nonlinear fiber core liquids. In particular, the roles played by two-photon, intermediate and excited-state absorptions of picosecond and nanosecond laser pulse pulses through ILC cored fibers and bulk films are thoroughly examined. In the nanosecond time scale, significant contributions from thermal/density effects are detected. Together with new insights into the complex intensity-dependent nonlinear transmission in the liquid fiber cores, we have also demonstrated the feasibility of using such fiber arrays for limiting picosecond and nanosecond laser pulses to below the eye/sensor damage level.
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U2 - 10.1016/S0301-0104(99)00025-7
DO - 10.1016/S0301-0104(99)00025-7
M3 - Article
AN - SCOPUS:0033439903
VL - 245
SP - 517
EP - 531
JO - Chemical Physics
JF - Chemical Physics
SN - 0301-0104
IS - 1-3
ER -