MICROFABRICATED ATOMIC CLOCKS AND MAGNETOMETERS (2009)
S. Knappe, V. Gerginov, V. Shah, H. G. Robinson, L. Hollberg, ...
We describe recent research at NIST directed towards the development of microfabricated atomic clocks and magnetometers based on coherent population trapping spectroscopy. Clock physics packages...
CHIP-SCALE ATOMIC FREQUENCY REFERENCES: FABRICATION AND PERFORMANCE (2009)
J. Kitching, L. Liew, J. Morel, H. G. Robinson, P. Schwindt, V. Shah, ...
The physics package for a chip-scale atomic frequency reference was constructed and tested. The device has a total volume of 9.5 mm 3, dissipates 75 mW of electrical power at an ambient temperature...
2005 NCSL International Workshop and Symposium Chip-Scale Atomic Clocks at NIST (2009)
Speaker J. Kitching, J. Kitching, L. Liew, J. Morel, H. G. Robinson, P. Schwindt, ...
We describe recent efforts to develop microfabricated atomic frequency references capable of supporting a wide variety of commercial and military systems such as global positioning and wireless...
Taichenachev, A. V., Yudin, V. I., Oates, C. W., Barber, Z. W., Hollberg, L.
We develop the method of Ramsey spectroscopy with the use of an additional field compensating the frequency shifts of clock optical transitions. This method in combination with the method of...
Poli, N., Barber, Z. W., Lemke, N. D., Oates, C. W., Ma, L. S., Stalnaker, J. E., ...
We report an uncertainty evaluation of an optical lattice clock based on the $^1S_0\leftrightarrow^3P_0$ transition in the bosonic isotope $^{174}$Yb by use of magnetically induced spectroscopy. The...
Optical Lattice Induced Light Shifts in an Yb Atomic Clock (2008)
Barber, Z. W., Stalnaker, J. E., Lemke, N. D., Poli, N., Oates, C. W., Fortier, T. M., ...
We present an experimental study of the lattice induced light shifts on the 1S_0-3P_0 optical clock transition (v_clock~518 THz) in neutral ytterbium. The ``magic'' frequency, v_magic, for the 174Yb...
Stalnaker, J. E., Coq, Y. Le, Fortier, T. M., Diddams, S. A., Oates, C. W., Hollberg, L.
We apply direct frequency-comb spectroscopy, in combination with precision cw spectroscopy, to measure the ${\rm 4s4p} ^3P_1 \to {\rm 4s5s} ^3S_1$ transition frequency in cold calcium atoms. A 657 nm...
Kilohertz-resolution spectroscopy of cold atoms with an optical frequency comb (2006)
Fortier, T. M., Coq, Y. Le, Stalnaker, J. E., Ortega, D., Diddams, S. A., Oates, C. W., ...
We have performed sub-Doppler spectroscopy on the narrow intercombination line of cold calcium atoms using the amplified output of a femtosecond laser frequency comb. Injection locking of a 657-nm...
Taichenachev, A. V., Yudin, V. I., Oates, C. W., Hoyt, C. W., Barber, Z. W., Hollberg, L.
We develop a method of spectroscopy that uses a weak static magnetic field to enable direct optical excitation of forbidden electric-dipole transitions that are otherwise prohibitively weak. The...
Hoyt, C. W., Barber, Z. W., Oates, C. W., Fortier, T. M., Diddams, S. A., Hollberg, L.
We report the direct excitation of the highly forbidden (6s^2) 1S0 - (6s6p) 3P0 optical transition in two odd isotopes of ytterbium. As the excitation laser frequency is scanned, absorption is...
[Distribution Statement] Approved for (2005)
Abstract- We are developing a new class of sensors based on atoms confined in microfabricated enclosures. Recent work at NIST has lead to a prototype chip scale atomic clock (CSAC) with remarkable...
The optical calcium frequency standards of PTB and NIST (2004)
Sterr, U., Degenhardt, C., Stoehr, H., Lisdat, Ch., Schnatz, H., Helmcke, J., ...
We describe the current status of the Ca optical frequency standards with laser-cooled neutral atoms realized in two different laboratories for the purpose of developing a possible future optical...
Budker, D., Hollberg, L., Kimball, D. F., Kitching, J., Pustelny, S., Yashchuk, V. V.
Using laser optical pumping, widths and frequency shifts are determined for microwave transitions between ground-state hyperfine components of $^{85}$Rb and $^{87}$Rb atoms contained in vapor cells...
Observation of Large Atomic-Recoil Induced Asymmetries in Cold Atom Spectroscopy (2004)
Oates, C. W., Wilpers, G., Hollberg, L.
The atomic recoil effect leads to large (25 %) asymmetries in simple spectroscopic investigations of Ca atoms that have been laser-cooled to 10 microkelvin. Starting with spectra from the more...
Theory of dark resonances for alkali vapors in a buffer-gas cell (2003)
Taichenachev, A., Yudin, V., Wynands, R., Stahler, M., Kitching, J., Hollberg, L.
We develop an analytical theory of dark resonances that accounts for the full atomic-level structure, as well as all field-induced effects such as coherence preparation, optical pumping, ac Stark...
Testing the stability of fundamental constants with the 199Hg+ single-ion optical clock (2002)
Bize, S., Diddams, S. A., Tanaka, U., Tanner, C. E., Oskay, W. H., Drullinger, R. E., ...
Over a two-year duration, we have compared the frequency of the 199Hg+ 5d106s 2S 1/2 (F=0) 5d9 6s2 2D 5/2 (F=2) electric-quadrupole transition at 282 nm with the frequency of the ground-state...
A Mercury-Ion Optical Clock (2002)
Bergquist,J. C., Tanaka,U., Drullinger,R. E., Itano,W. M., Wineland,D. J., Diddams,S. A., ...
A Mercury-Ion Optical Clock (2002)
Bergquist, J. C., Tanaka, U., Drullinger, R. E., Itano, W. M., Wineland, D. J., Diddams, S. A., ...
Quenched Narrow-Line Laser Cooling of 40Ca to Near the Photon Recoil Limit (2001)
Curtis, E. A., Oates, C. W., Hollberg, L.
We present a cooling method that should be generally applicable to atoms with narrow optical transitions. This technique uses velocity-selective pulses to drive atoms towards a zero-velocity dark...
Udem, Th., Diddams, S. A., Vogel, K. R., Oates, C. W., Curtis, E. A., Lee, W. D., ...
The frequency comb created by a femtosecond mode-locked laser and a microstructured fiber is used to phase coherently measure the frequencies of both the Hg^+ and Ca optical standards with respect to...
Two-dimensional sideband Raman cooling and Zeeman state preparation in an optical lattice (1999)
Taichenachev, A. V., Tumaikin, A. M., Yudin, V. I., Hollberg, L.
A method of sideband Raman cooling to the vibrational ground state of the $m=0$ Zeeman sublevel in a far-detuned two-dimensional optical lattice is proposed. In our scheme, the Raman coupling between...
Ultra-Slow Light and Enhanced Nonlinear Optical Effects in a Coherently Driven Hot Atomic Gas (1999)
Kash, Michael M., Sautenkov, Vladimir A., Zibrov, Alexander S., Hollberg, L., Welch, George R., Lukin, Mikhail D., ...
We report the observation of small group velocities of order 90 meters per second, and large group delays of greater than 0.26 ms, in an optically dense hot rubidium gas (~360 K). Media of this kind...
INFRARED SOURCES FOR SPECTROSCOPY BASED ON DIFFERENCE FREQUENCY GENERATION (1996)
Tittel, F. K., Petrov, K., Eckhoff, W. C., Wang, S., Putnam, R. S., ...
Author Institution: Departments of Chemistry and Electrical and Computer Engineering and Rice Quantum Institute, Rice University; Departments of Chemistry and Electrical and Computer Engineering and...
DIODE LASERS AND NONLINEAR OPTICS FOR SPECTROSCOPY, FROM THE UV TO MILLIMETER WAVES (1996)
Hollberg, L., Marquardt, J. H., Waltman, S., Fox, R. W.
$^{a}$ Diode Laser Spectroscopy, Edit K. Niemax, special issue of Spectrochimica Acta Reviews, 15, 291, 1993. $^{b}$ R. W. Fox, A. S. Zibrov, and L. Hollberg, Semiconductor Diode Lasers, in Methods...
Vansteenkiste, N., Gerz, C., Kaiser, R., Hollberg, L., Salomon, C., Aspect, A.
We describe a single mode LNA ring laser, which emits 60 mW at $1.083~\mu$m. Thanks to a high frequency F.M. saturated absorption technique, this laser is directly locked to an atomic line in a 4He...
Vansteenkiste, N., Gerz, C., Kaiser, R., Hollberg, L., Salomon, C., Aspect, A.
We describe a single mode LNA ring laser, which emits 60 mW at $1.083~\mu$m. Thanks to a high frequency F.M. saturated absorption technique, this laser is directly locked to an atomic line in a 4He...
Vansteenkiste, N., Gerz, C., Kaiser, R., Hollberg, L., Salomon, C., Aspect, A.
We describe a single mode LNA ring laser, which emits 60 mW at $1.083~\mu$m. Thanks to a high frequency F.M. saturated absorption technique, this laser is directly locked to an atomic line in a 4He...
PROGRESS TOWARD PHASE-STABLE OPTICAL FREQUENCY STANDARDS (1981)
Hall, J., Hollberg, L., Long-Sheng, Ma, Baer, T., Robinson, H.
The sensitivity of laser spectroscopy is usually limited by laser amplitude noise of a technical nature. We describe a new and very sensitive detection technique which basically eliminates this...
PROGRESS TOWARD PHASE-STABLE OPTICAL FREQUENCY STANDARDS (1981)
Hall, J., Hollberg, L., Long-Sheng, Ma, Baer, T., Robinson, H.
The sensitivity of laser spectroscopy is usually limited by laser amplitude noise of a technical nature. We describe a new and very sensitive detection technique which basically eliminates this...
PROGRESS TOWARD PHASE-STABLE OPTICAL FREQUENCY STANDARDS (1981)
Hall, J., Hollberg, L., Long-Sheng, Ma, Baer, T., Robinson, H.
The sensitivity of laser spectroscopy is usually limited by laser amplitude noise of a technical nature. We describe a new and very sensitive detection technique which basically eliminates this...