Frequency-stable operation of a diode-pumped continuous-wave RbTiOAsO_4 optical parametric oscillator

Scheidt, M.; Beier, B.; Boller, K.-J.; Wallenstein, R.

doi:10.1364/ol.22.001287

Cited by 27 publications

(6 citation statements)

References 12 publications

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“…Tunable, continuous-wave (cw), single-frequency sources covering the 700-1000 nm spectral region are of considerable interest for diverse range of applications from spectroscopy and biomedicine to pumping of optical parametric oscillators (OPOs) [1,2]. The Ti:sapphire laser, the workhorse of the near-infrared region, is the primary source in this spectral range, catering for the majority of applications.…”

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confidence: 99%

High-power, continuous-wave, single-frequency, all-periodically-poled, near-infrared source

2012

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We report a high-power, single-frequency, continuous-wave (cw) source tunable across 775-807 nm in the near-infrared, based on internal second harmonic generation (SHG) of a cw singly-resonant optical parametric oscillator (OPO) pumped by a Yb-fiber laser. The compact, all-periodically-poled source employs a 48-mm-long, multigrating MgO doped periodically poled lithium niobate (MgO:PPLN) crystal for the OPO and a 30-mm-long, fan-out grating MgO-doped stoichiometric periodically poled lithium tantalate (MgO:sPPLT) crystal for intracavity SHG, providing as much as 3.7 W of near-infrared power at 793 nm, together with 4 W of idler power at 3232 nm, at an overall extraction efficiency of 28%. Further, the cw OPO is tunable across 3125-3396 nm in the idler, providing as much as 4.3 W at 3133 nm with >3.8 W over 77% of the tuning range together with >3 W of near-infrared power across 56% of SHG tuning range, in high-spatial beam-quality with M2<1.4. The SHG output has an instantaneous linewidth of 8.5 MHz and exhibits a passive power stability better than 3.5% rms over more than 1 min.

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confidence: 99%

High-power, continuous-wave, single-frequency, all-periodically-poled, near-infrared source

2012

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“…1. The frequency to be divided is provided by a single-frequency AlGaAs diode masteroscillator power-amplifier (MOPA) system with a wavelength tuning range of about 25 nm around 800 nm [15]. The master oscillator is a single stripe diode laser in a Littman external grating cavity [16].…”

Section: Experimental Setup and Characteristics Of The Opomentioning

confidence: 99%

High-precision wavelength-flexible frequency division for metrology

Groß¹,

Klein²,

Boller³

2005

Phys. Rev. A

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We realize and investigate a wavelength-flexible phase-coherent all-optical frequency-by-2 divider. Frequency division is obtained via self-phase locking in a degenerate continuous-wave (cw) optical parametric oscillator (OPO). The wavelength flexibility of the divider is based on the use of quasiphase matching (QPM) with perpendicular polarizations of the OPO output waves (type II). Mutual injection of the subharmonic waves is achieved by using an intracavity quarter-wave plate. A locking range of up to 160 MHz is observed experimentally, and a stable, self-phase-locked operation of the OPO is achieved over typically 15 minutes. For the first time, we measure the frequency stability of the divider by recording the relative phases of the subharmonic waves as a function of time. For a measurement time interval of 40 s, we measure a residual frequency instability of the divider of 8 · 10 −18 . We demonstrate a full control of the OPO's output waves' phase difference and observe the related change in power ratio of the subharmonic waves in agreement with the theoretically expected behavior. We propose that this possibility to monitor the divider's drift within the locking range via the power ratio can be used for stabilizing that drift in order to achieve a significant improvement of the long-term stability of the frequency-by-2 divider.

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“…The control bandwidth was estimated to be 20 kHz. The sideband suppression was estimated to be 16 Similarly, we observed the fluorescence signals from Cs-D2 line. Blue: Output power from the OPO, Green: transmitted intensity Cs-DI line (895n) and Rb-D1 line (795nm).…”

Section: Jwb4 2 Experimental Setupmentioning

confidence: 72%

Atomic and molecular spectroscopy with a phase-locked, continuous-wave optical parametric oscillator

Ikegami

Inaba

Ohshima

2005 Quantum Electronics and Laser Science Conference

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We demonstrated the phase-locking and continuous tuning capabilities of a continuous-wave, monolithic optical parametric oscillator (cw-OPO). At first, the cw-OPO was phase-locked to an optical frequency comb in the 830 nm region. The residual phase noise under phase-locking was 220 mrad in rms and the energy concentration to the carrier was 95 %. Next, the signal light from the cw-OPO was phase-modulated by an extemal electrooptic modulator (EOM) in the microwave frequency. The single sideband was extracted by using a diffraction grating and a spatial filter. We could observe the Doppler broadened absorption and fluorescence profile of the Cs-D2 line by tuning the signal wavelength to 852nm and by scanning the microwave modulation frequency. We are trying the sub-Doppler spectroscopy ofseveral atoms and molecules with the phase-locked cw-OPO and these results will also be presented.

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Frequency-stable operation of a diode-pumped continuous-wave RbTiOAsO_4 optical parametric oscillator

Cited by 27 publications

References 12 publications

High-power, continuous-wave, single-frequency, all-periodically-poled, near-infrared source

High-power, continuous-wave, single-frequency, all-periodically-poled, near-infrared source

High-precision wavelength-flexible frequency division for metrology

Atomic and molecular spectroscopy with a phase-locked, continuous-wave optical parametric oscillator

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