Dye laser spectrometer for ultrahigh spectral resolution: design and performance

Helmcke, J.; Lee, S. A.; Hall, John L.

doi:10.1364/ao.21.001686

Cited by 83 publications

(20 citation statements)

References 14 publications

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“…Lock-in amplifiers are used to demodulate the transmission through the TC for both wavelengths. 6,8 This provides a derivative-like lineshape error signal for locking the transmission maxima. The 780 nm error signal is used in an integrator feedback loop which adjusts cavity length using the PZT.…”

Section: Methodsmentioning

confidence: 99%

“…16 However, this laser system is prestablized using a low-finesse cavity in a similar manner to the system described in Ref. 8.…”

Section: Methodsmentioning

confidence: 99%

“…5,6,7,8,9 In this case, the cavity is locked to the reference laser and the target laser is locked to the cavity using analog circuitry. To make the fringes coincide it is possible to frequency shift either the reference or the target laser using an electro-optic modulator (EOM) 5 or an acoustooptic modulator (AOM).…”

Section: Introductionmentioning

confidence: 99%

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Optical transfer cavity stabilization using current-modulated injection-locked diode lasers

Bohlouli-Zanjani

Afrousheh

Martin

2006

Review of Scientific Instruments

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It is demonstrated that RF current modulation of a frequency stabilized injection-locked diode laser allows the stabilization of an optical cavity to adjustable lengths, by variation of the RF frequency. This transfer cavity may be used to stabilize another laser at an arbitrary wavelength, in the absence of atomic or molecular transitions suitable for stabilization. Implementation involves equipment and techniques commonly used in laser cooling and trapping laboratories, and does not require electro-or acousto-optic modulators. With this technique we stabilize a transfer cavity using a RF current-modulated diode laser which is injection locked to a 780 nm reference diode laser. The reference laser is stabilized using polarization spectroscopy in a Rb cell. A Ti:sapphire ring laser at 960 nm is locked to this transfer cavity and may be precisely scanned by varying the RF modulation frequency. We demonstrate the suitability of this system for the excitation of laser cooled Rb atoms to Rydberg states.

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Section: Methodsmentioning

confidence: 99%

“…16 However, this laser system is prestablized using a low-finesse cavity in a similar manner to the system described in Ref. 8.…”

Section: Methodsmentioning

confidence: 99%

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Optical transfer cavity stabilization using current-modulated injection-locked diode lasers

Bohlouli-Zanjani

Afrousheh

Martin

2006

Review of Scientific Instruments

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“…Here, ͑g 0 , g Ќ ͒͞2p ͑32, 2.6͒ MHz, with g 0 as the peak atom-field coupling coefficient and g Ќ as the dipole decay rate for the e ! g transition, leading to critical photon and atom numbers ͑m 0 ϵ g relative to n atom by way of an auxiliary "transfer cavity" [11,17]. It is detuned 2 longitudinal-mode orders above the cavity QED mode at n cavity ഠ n atom , and creates a small ac Stark shift of 50 kHz in n atom .…”

Section: (Received 2 August 1999)mentioning

confidence: 99%

Trapping of Single Atoms in Cavity QED

1999

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By integrating the techniques of laser cooling and trapping with those of cavity quantum electrodynamics (QED), single cesium atoms have been trapped within the mode of a small, high finesse optical cavity in a regime of strong coupling. The observed lifetime for individual atoms trapped within the cavity mode is t ഠ 28 ms, and is limited by fluctuations of light forces arising from the far-detuned intracavity field. This initial realization of trapped atoms in cavity QED should enable diverse protocols in quantum information science. PACS numbers: 42.50.Vk, 32.80.Pj Cavity quantum electrodynamics (QED) offers powerful possibilities for the deterministic control of atom-photon interactions quantum by quantum [1,2]. Indeed, modern experiments in cavity QED have achieved the exceptional circumstance of strong coupling, for which single quanta can profoundly impact the dynamics of the atom-cavity system. Cavity QED has led to many new phenomena, including the realization of a quantum phase gate [3], the creation of Fock states of the radiation field [4], and the demonstration of quantum nondemolition detection for single photons [5].These and other diverse accomplishments set the stage for advances into yet broader frontiers in quantum information science for which cavity QED offers unique advantages. For example, it should be possible to realize complex quantum circuits and quantum networks by way of multiple atom-cavity systems linked by optical interconnects [6,7], as well as to pursue more general investigations of quantum dynamics for continuously observed open quantum systems [8]. The primary technical challenge on the road toward these scientific goals is the need to trap and localize atoms within a cavity in a setting suitable for strong coupling, thereby eliminating the indeterminism intrinsic to atom beams. In fact, all serious schemes for quantum computation and communication via cavity QED rely on developing techniques for atom confinement that do not interfere with cavity QED interactions.In this Letter, we report a significant milestone in this quest, namely the first trapping of a single atom in cavity QED. Our experiment integrates the techniques of laser cooling and trapping with those of cavity QED to deliver cold atoms (kinetic energy E k Ӎ 30 mK) into the mode of a high finesse optical cavity. In a domain of strong coupling, the trajectory of an individual atom within the cavity mode can be monitored in real time by a near resonant field with mean intracavity photon numbern , 1 [9-13]. Here we exploit this capability to trigger ON an auxiliary field that functions as a far-off-resonance dipoleforce trap (FORT) [14,15], providing a confining potential to trap the atom within the cavity mode. Likewise, when the FORT is turned OFF after a variable delay, strong coupling enables detection of the atom. Repetition of such measurements yields a trap lifetime t 28 6 6 ms, which is currently limited by fluctuations in the intensity of the intracavity trapping field (FORT). Stated in units of the coupl...

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“…During single-frequency operation, we actively stabilized the laser frequency to a Fabry-Perot resonance using the sidelock technique [13]. From the in-loop photodetector noise while the laser was locked, we estimate the laser frequency stability to be better than 1 MHz integrated over a detection band of 1 Hz to 1 MHz.…”

mentioning

confidence: 99%

Laser cooling of trapped ytterbium ions with an ultraviolet diode laser

et al. 2006

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We demonstrate an ultraviolet diode laser system for cooling of trapped ytterbium ions. The laser power and linewidth are comparable to previous systems based on resonant frequency doubling, but the system is simpler, more robust, and less expensive. We use the laser system to cool small numbers of ytterbium ions confined in a linear Paul trap. From the observed spectra, we deduce final temperatures < 270 mK.Laser-cooled trapped ions are the basis for many emerging technologies in atomic physics, especially large-scale ion-trap quantum computing [1,2] and optical frequency metrology [3,4]. In particular, laser-cooled Yb + has been extensively investigated for optical clocks, owing to the narrow linewidths associated with transitions from the ground state to a number of metastable states [5,6]. However, laser cooling of ions is often impeded by the expense and fragility of the required single-frequency ultraviolet (UV) laser source, which generally consists of a single-frequency infrared laser whose output is then frequency-doubled in an external optical resonator. This approach is currently adopted for laser cooling of Yb + [5,6,7,8,9].Here we describe a simpler, more robust, and less expensive laser system for cooling Yb + based on a UV laser diode. The laser diode is tuned to the Yb + resonance wavelength at 369.5 nm using a combination of temperature tuning and optical feedback from a diffraction grating. Using this system, we have achieved Doppler cooling of small numbers

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Dye laser spectrometer for ultrahigh spectral resolution: design and performance

Cited by 83 publications

References 14 publications

Optical transfer cavity stabilization using current-modulated injection-locked diode lasers

Optical transfer cavity stabilization using current-modulated injection-locked diode lasers

Trapping of Single Atoms in Cavity QED

Laser cooling of trapped ytterbium ions with an ultraviolet diode laser

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