Abstract
| Original language | English |
|---|---|
| Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
| Publisher | SPIE |
| Pages | 719325 |
| Number of pages | 1 |
| Volume | 7193 |
| ISBN (Print) | 0277786X |
| DOIs | |
| Publication status | Published - 2009 |
Publication series
| Name | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| Publisher | SPIE |
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Keywords
- Corundum
- Infrared spectroscopy
- Methane
- Gas absorption
- Parametric oscillators
- Tuning
- Solid state lasers
- Optical parametric oscillators
- Infrared radiation
- Data compression
- Sapphire
- Oscillators (electronic)
- Pumping (laser)
- Ytterbium
- Bandwidth
Cite this
Ultrafast optical parametric oscillators for spectroscopy. / Reid, Derryck T; Kornaszewski, Lukasz W; Muller, T P; Gayraud, Nicolas; MacPherson, William N; Hand, Duncan P; Stone, James M; Knight, Jonathan C.
Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7193 SPIE, 2009. p. 719325 (Proceedings of SPIE - The International Society for Optical Engineering).Research output: Chapter in Book/Report/Conference proceeding › Chapter
}
TY - CHAP
T1 - Ultrafast optical parametric oscillators for spectroscopy
AU - Reid, Derryck T
AU - Kornaszewski, Lukasz W
AU - Muller, T P
AU - Gayraud, Nicolas
AU - MacPherson, William N
AU - Hand, Duncan P
AU - Stone, James M
AU - Knight, Jonathan C
PY - 2009
Y1 - 2009
N2 - The combination of high spatial coherence, wide tunability and broad intrinsic bandwidth makes femtosecond optical parametric oscillators (OPO s) uniquely attractive sources for spectroscopy in the visible and infrared. In the midinfrared the idler pulse bandwidths from such systems can extend over several hundred nanometres, making Fouriertransform spectroscopy possible, and transferring the wavelength calibration and resolution constraints from the OPO to the detection system. Unlike thermal sources of mid-infrared radiation, the spatial coherence of the output from femtosecond OPOs is extremely high, with the potential for spectroscopic measurements to be made over long free-space path lengths, in fiber or at the focus of a microscope objective. Using OPOs based on MgO:PPLN, and pumped by a self-modelocked Ti:sapphire laser, we have shown free-space and photonic-crystal-fiber-based spectroscopy of methane to concentrations as low as 50 ppm. The spectral bandwidth of the idler pulses used for gas sensing exceeds 200 nm, allowing the principal methane absorption lines around 3.3 m to be acquired without wavelength tuning the OPO. Practical Ti:sapphire and Yb:fiber pumped based OPOs have been demonstrated that offer combinations of flexible tuning, high stability, low-threshold operation and high-energy output pulses.
AB - The combination of high spatial coherence, wide tunability and broad intrinsic bandwidth makes femtosecond optical parametric oscillators (OPO s) uniquely attractive sources for spectroscopy in the visible and infrared. In the midinfrared the idler pulse bandwidths from such systems can extend over several hundred nanometres, making Fouriertransform spectroscopy possible, and transferring the wavelength calibration and resolution constraints from the OPO to the detection system. Unlike thermal sources of mid-infrared radiation, the spatial coherence of the output from femtosecond OPOs is extremely high, with the potential for spectroscopic measurements to be made over long free-space path lengths, in fiber or at the focus of a microscope objective. Using OPOs based on MgO:PPLN, and pumped by a self-modelocked Ti:sapphire laser, we have shown free-space and photonic-crystal-fiber-based spectroscopy of methane to concentrations as low as 50 ppm. The spectral bandwidth of the idler pulses used for gas sensing exceeds 200 nm, allowing the principal methane absorption lines around 3.3 m to be acquired without wavelength tuning the OPO. Practical Ti:sapphire and Yb:fiber pumped based OPOs have been demonstrated that offer combinations of flexible tuning, high stability, low-threshold operation and high-energy output pulses.
KW - Corundum
KW - Infrared spectroscopy
KW - Methane
KW - Gas absorption
KW - Parametric oscillators
KW - Tuning
KW - Solid state lasers
KW - Optical parametric oscillators
KW - Infrared radiation
KW - Data compression
KW - Sapphire
KW - Oscillators (electronic)
KW - Pumping (laser)
KW - Ytterbium
KW - Bandwidth
UR - http://dx.doi.org/10.1117/12.812262
U2 - 10.1117/12.812262
DO - 10.1117/12.812262
M3 - Chapter
SN - 0277786X
VL - 7193
T3 - Proceedings of SPIE - The International Society for Optical Engineering
SP - 719325
BT - Proceedings of SPIE - The International Society for Optical Engineering
PB - SPIE
ER -