Abstract
We present a widely-tunable, singly-resonant optical parametric oscillator, emitting more than 1 W between 2.7 and 4.2 μ m, which is phase locked to a self-referenced frequency comb. Both pump and signal frequencies are directly phase-locked to the frequency comb of a NIR-emitting fs mode-locked fibre laser, linked, in turn, to the caesium primary standard. We estimate for the idler frequency a fractional Allan deviation of ∼ 3×10 -12τ-1/2 between 1 and 200 s. To test the spectroscopic performance of the OPO, we carried out saturation spectroscopy of several transitions belonging to the.1 rovibrational band of CH3I, resolving their electronic quadrupole hyperfine structure, estimating a linewidth better than 200 kHz FWHM for the idler, and determining the absolute frequency of the hyperfine components with a 50-kHz-uncertainty.
| Original language | English |
|---|---|
| Pages (from-to) | 9178-9186 |
| Number of pages | 9 |
| Journal | Optics Express |
| Volume | 20 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - Apr 9 2012 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
Cite this
Frequency-comb-referenced singly-resonant OPO for sub-Doppler spectroscopy. / Ricciardi, I.; De Tommasi, E.; Maddaloni, P.; Mosca, S.; Rocco, A.; Zondy, J. J.; De Rosa, M.; De Natale, P.
In: Optics Express, Vol. 20, No. 8, 09.04.2012, p. 9178-9186.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Frequency-comb-referenced singly-resonant OPO for sub-Doppler spectroscopy
AU - Ricciardi, I.
AU - De Tommasi, E.
AU - Maddaloni, P.
AU - Mosca, S.
AU - Rocco, A.
AU - Zondy, J. J.
AU - De Rosa, M.
AU - De Natale, P.
PY - 2012/4/9
Y1 - 2012/4/9
N2 - We present a widely-tunable, singly-resonant optical parametric oscillator, emitting more than 1 W between 2.7 and 4.2 μ m, which is phase locked to a self-referenced frequency comb. Both pump and signal frequencies are directly phase-locked to the frequency comb of a NIR-emitting fs mode-locked fibre laser, linked, in turn, to the caesium primary standard. We estimate for the idler frequency a fractional Allan deviation of ∼ 3×10 -12τ-1/2 between 1 and 200 s. To test the spectroscopic performance of the OPO, we carried out saturation spectroscopy of several transitions belonging to the.1 rovibrational band of CH3I, resolving their electronic quadrupole hyperfine structure, estimating a linewidth better than 200 kHz FWHM for the idler, and determining the absolute frequency of the hyperfine components with a 50-kHz-uncertainty.
AB - We present a widely-tunable, singly-resonant optical parametric oscillator, emitting more than 1 W between 2.7 and 4.2 μ m, which is phase locked to a self-referenced frequency comb. Both pump and signal frequencies are directly phase-locked to the frequency comb of a NIR-emitting fs mode-locked fibre laser, linked, in turn, to the caesium primary standard. We estimate for the idler frequency a fractional Allan deviation of ∼ 3×10 -12τ-1/2 between 1 and 200 s. To test the spectroscopic performance of the OPO, we carried out saturation spectroscopy of several transitions belonging to the.1 rovibrational band of CH3I, resolving their electronic quadrupole hyperfine structure, estimating a linewidth better than 200 kHz FWHM for the idler, and determining the absolute frequency of the hyperfine components with a 50-kHz-uncertainty.
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U2 - 10.1364/OE.20.009178
DO - 10.1364/OE.20.009178
M3 - Article
VL - 20
SP - 9178
EP - 9186
JO - Optics Express
JF - Optics Express
SN - 1094-4087
IS - 8
ER -