S. Kuhr, W. Alt, D. Schrader, I. Dotsenko, Y. Miroshnychenko, A. Rauschenbeutel, D. Meschede, Phys. Rev. A 72, 023406 (2005)

The ILT800 spectral filtration was designed to match the photoinitiators’ response to UV light which is directly related to its absorption, and is very wavelength selective.  Most lamps emit broadband UV/VIS/IR, and the lamp’s output may not change evenly over all wavelengths.  The ILT800 filters were designed to monitor changes in output in the areas that effect the absorption, and in turn, the effectiveness of the curing.  Whether you’re using a low output fluorescent source for sterilization, high intensity mercury or xenon lamps for curing, or narrow-band LED’s for photolithography, there is a version of the ILT800 optimized for your needs.

The one-photon Rabi frequencies are \(\varOmega _{i,F_i F_f}=\varOmega _{i,0} \tilde{\varOmega }_{F_i F_f}\) with \(\varOmega _{i,0}= {\mathcal {E}}_i e \langle 7^2P_{1/2}||r||6^2S_{1/2}\rangle /\hbar\), where \({\mathcal {E}}_i\) is the electric field amplitude of Raman laser \(i=1,2\), \(e\langle 7^2P_{1/2}||r||6^2S_{1/2}\rangle\) is the reduced dipole matrix element for the \(6^2S_{1/2} \rightarrow 7^2P_{1/2}\) transition, e is the elementary charge, and

where \(F', F_{1,2}\) are the total angular momentum quantum numbers of the intermediate, initial, and final states, respectively, \(\varOmega _{1,F_1 F'}\) and \(\varOmega _{2,F' F_2}\) are the single-photon on-resonance Rabi frequencies for the \(F_1 \rightarrow F'\) and \(F' \rightarrow F_2\) transitions, respectively, and \(\varDelta _{R,F'}\) is the detuning of the first Raman laser beam from the \(F_1 \rightarrow F'\) transition.

For our specific transitions in \(^{133}\)Cs, \(6^2S_{1/2}, F=3, m_F=0 \rightarrow 7^2P_{1/2}, F=3,4, m_F=1\) and \(7^2P_{1/2}, F=3,4, m_F=1 \rightarrow 6^2S_{1/2}, F=4, m_F=0\), the relevant quantum numbers are the initial and final total electron angular momentum quantum numbers \(J_1=J'=1/2\), the nuclear spin quantum number \(I=7/2\), the initial magnetic quantum number \(m_{F1}=0\), and we use circularly polarized Raman laser beams such that the z-components of the angular momentum of the absorbed and emitted photons are \(q_1=q_2=1\). With these, we find

The ILT800 CureRight UV radiometer system outperforms the competitors with features such as profiling as a standard feature, and programmable settings such as measurement modes (auto/manual/live), minimum light level threshold, lamp-to-lamp measurement interval (delay).  The system also has a uniquely designed user interface that places the input sensor and optic, device controls, and the readout display all on the same side, allowing simultaneous measuring, monitoring, and analyzing of measurement data.

D. Schrader, I. Dotsenko, M. Khudaverdyan, Y. Miroshnychenko, A. Rauschenbeutel, D. Meschede, Phys. Rev. Lett. 93, 150501 (2004)

where \(\varOmega _{1,2}\) are the single-photon on-resonance Rabi frequencies for the \(6^2S_{1/2}, F=3, m_F=0 \rightarrow 7^2P_{1/2}\) and \(7^2P_{1/2} \rightarrow 6^2S_{1/2}, F=4, m_F=0\) transitions, respectively. \(\varDelta _R\) is the detuning of the first Raman laser beam from the \(6^2S_{1/2}, F=3 \rightarrow 7^2P_{1/2}\) (fine structure level) transition, and we have assumed that the detuning of the second Raman laser from the \(6^2S_{1/2}, F=4 \rightarrow 7^2P_{1/2}\) transition is the same. Equation (20) is valid for two-photon resonance or when the departure from two-photon resonance is small compared to \(\varDelta _R\).

In this work, we used two Raman laser beams of identical power, waist, and alignment, so \({\mathcal {E}}_1={\mathcal {E}}_2\), and consequently

The ILT800 UV radiometer allows users to monitor their curing processes over time by enabling them to store, download, and view both current and all previously saved readings on the device’s integrated OLED display.  This on-board data storage and review capability allows users to quickly see changes that have occured over time.  It also enables users to easily identify potential problems in their systems such as dirty lamps and reflectors, lamp / reflector misalignment, declining lamp output, failed lamps, and power supply issues, to name a few.  Added benefits include the ability to download the results to a computer for more sophisticated analysis.  Using ILT’s proprietary DataLight CureRight software interface, users can download and view their data, as well as create spreadsheets and reports using their own analysis tools.

for a stimulated Raman emission. Here, \(C_{F_1,m_{F1},1,q_1}^{F',m_{F1}+q_1}\) and \(C_{F',m_{F1}+q_1,1,-q_2}^{F_2,m_{F1}+q_1-q_2}\) are Clebsch–Gordan coefficients, and

The ILT800 CureRight series measures and validates all types of UV curing methods and sources including conveyor, belt, oven, flood, area, spot, fiber optic, collimated beam, side cure, 180° curing, 3D printing, pulsed and traditional UV lamps, and UV/VIS LEDs &  light sources.

With a thickness of just 12.7 mm, it is one of the thinnest UV radiometers in the world and is therefore perfectly suited for use on systems with conveyor belts, making it the perfect measuring device for monitoring and measuring UV curing or UV drying during the exposure of photoresists and during printing.

Taking into account the hyperfine splitting of the \(7^2P_{1/2}\) level, we have to sum over all possible intermediate states, resulting in

To find the total Stark shift of each of the hyperfine ground states, we need to add the Stark shifts due to the first and second Raman laser beams, so

Gillen-Christandl, K., Gillen, G.D., Piotrowicz, M.J. et al. Comparison of Gaussian and super Gaussian laser beams for addressing atomic qubits. Appl. Phys. B 122, 131 (2016). https://doi.org/10.1007/s00340-016-6407-y

To enhance the data storage and capabilities even further, ILT added an advanced sorting feature called Device ID, a feature not found in any other UV curing light meter.  Device ID allows users to program up to 20 unique system/light source name tags. Device ID allows users to then view and export all saved data for each curing station or light source into separate files, clearly identified with the Device ID.  It’s like having the functionality of multiple meters in one device.

T. Xia, M. Lichtman, K. Maller, A.W. Carr, M.J. Piotrowicz, L. Isenhower, M. Saffman, Phys. Rev. Lett. 114, 100503 (2015)

The ILT800 CureRight Radiometer Series replaces ILT’s popular ILT400/490 meters with a host of new and improved features and capabilities including a broad, 5.5 decade measurement range, user-programmable settings, faster sampling speeds, the ability store store up to 20 unique device IDs, and the ability to store up to 1,000 profiles. The ILT800 measures both pulsed and steady-state light sources, and features a large, OLED display. The ILT800 is available in multiple filtrations, many of which are available to purchase in our on-line store. Custom filtration and OEM options are also available.

The Rabi oscillations investigated in this work are driven via a Raman process from the \(F=3, m_F=0\) hyperfine ground state of the \(6^2S_{1/2}\) manifold in \(^{133}\)Cs to its \(F=4,m_F=0\) hyperfine ground state via the \(7^2P_{1/2}\) manifold using two laser beams. To treat this kind of Rabi oscillation, we repeat the steps from Sect. 2.4 for a \(\varLambda\)-type three-level system with two lasers tuned to the two transitions of the Raman process. For detunings large enough so that the excited-state population is small, we can adiabatically eliminate the \(7^2P_{1/2}\) state, resulting in an effective two-level Rabi oscillation with an on-resonance Rabi frequency of

The ILT800 CureRight is a feature-rich profiling UV curing radiometer that delivers unmatched flexibility and capability not found in any other system.  Its versatility allows the unit to measure lights used for UV curing and for numerous other applications such as sterilization / disinfection, lithography, and more.  The system has been designed with the varying needs of its users in mind, and can be configured and customized to your unique environment.

In \(^{133}\)Cs, we have \(F_1=3\), \(F_2=4\), and \(F'=3,4\). We thus find for the two-photon on-resonance Rabi frequency

For each hyperfine ground state, we must sum over the contributions due to each of the hyperfine states of the \(7^2P_{1/2}\) manifold, resulting in

E. Mount, C. Kabytayev, S. Crain, R. Harper, S.Y. Baek, G. Vrijsen, S.T. Flammia, K.R. Brown, P. Maunz, J. Kim, Phys. Rev. A 92, 060301(R) (2015)

where we used primes to indicate quantum numbers pertaining to the excited states. The detunings from the \(7^2P_{1/2}\) hyperfine states are \(\varDelta _{R,3'}=\varDelta _R-\varDelta _{F'3}\) and \(\varDelta _{R,4'}=\varDelta _R-\varDelta _{F'4}\). Here, \(\varDelta _{F'3}=-2\pi \times 212.3\,\text {MHz}\) and \(\varDelta _{F'4}=2\pi \times 165.1\,\text {MHz}\) are the hyperfine shifts from the \(7^2P_{1/2}\) fine structure level to the \(F'=3,4\) hyperfine states, respectively.

F. Nogrette, H. Labuhn, S. Ravets, D. Barredo, L. Béguin, A. Vernier, T. Lahaye, A. Browaeys, Phys. Rev. X 4, 021034 (2014)

The reduced dipole matrix element for the \(6^2S_{1/2}\rightarrow 7^2P_{1/2}\) transition in \(^{133}\)Cs is \(e\langle 7^2P_{1/2}||r||6^2S_{1/2}\rangle =0.276 ea_0\) [19], where \(a_0\) is the Bohr radius.

K. Maller, M.T. Lichtman, T. Xia, Y. Sun, M.J. Piotrowicz, A.W. Carr, L. Isenhower, M. Saffman, Phys. Rev. A 92, 022336 (2015)

We study the fidelity of single-qubit quantum gates performed with two-frequency laser fields that have a Gaussian or super Gaussian spatial mode. Numerical simulations are used to account for imperfections arising from atomic motion in an optical trap, spatially varying Stark shifts of the trapping and control beams, and transverse and axial misalignment of the control beams. Numerical results that account for the three-dimensional distribution of control light show that a super Gaussian mode with intensity \(I\sim \hbox {e}^{-2(r/w_0)^n}\) provides reduced sensitivity to atomic motion and beam misalignment. Choosing a super Gaussian with \(n=6\) the decay time of finite temperature Rabi oscillations can be increased by a factor of 60 compared to an \(n=2\) Gaussian beam, while reducing crosstalk to neighboring qubit sites.

D.D. Yavuz, P.B. Kulatunga, E. Urban, T.A. Johnson, N. Proite, T. Henage, T.G. Walker, M. Saffman, Phys. Rev. Lett. 96, 063001 (2006)