Spot-patterned alkali metal azide on a flat substrate enables uniform miniature gas cells with flexible shape control and safer mass production.
EM reflective coatings, trenches, and a sealed waveguide interface cut leakage and interference in gas-cell quantum frequency detection.
External metallization and doped silicon keep SNR high in a hollow quantum waveguide while non-metallic inner walls cut cost and reactions.
Compressed source material on a substrate cuts contamination and enables external heating for smaller, longer-life atomic vapor sources.
Integrated optical volumes, a microwave cavity, and beam enclosure cut vacuum size and assembly complexity while preserving precision.
A birefringent and electro-optic cavity enables stable 759 nm and 813 nm dual-frequency output with lower complexity and reduced mode hopping.
Collisional excitation transfer in a microplasma lamp boosts deep-UV and VUV output, enabling compact 194 nm sources for clocks and disinfection.
Digital PLL control automatically locks and relocks optical comb repetition and offset frequencies despite temperature drift and vibration.
A Zeeman coil doubles as oven heater and beam decelerator, cutting power use, size, and structural complexity in atom beam generation.
Combining a reference laser and frequency comb on a photonic chip before supercontinuum generation cuts alignment difficulty, loss, and vibration sensitivity.
Conductor-lined substrate openings form vertical waveguides that cut package cost while preserving millimeter-wave clock stability over time and temperature.
A heated source and compact magneto-optical trap raise slow atomic beam flow for strontium or ytterbium while limiting thermal radiation.
A removable cartridge lets the atom source be refilled from the atmosphere side without disassembling vacuum components or breaking the seal.
An unmodulated reference beam in a separate vapor-cell path cancels phase-to-amplitude noise, improving atomic clock resonance detection.
Amplitude- and phase-tuned electro-optic modulation generates agile shifted laser frequencies while rejecting carrier harmonics that impair atomic measurements.
A wafer-level process uses alkali metal precursors to generate vapor in situ, fill cell cavities, and seal cleaner vapor cells with less contamination.
Electric-field control of diamond NV centers replaces bulky gas cells to deliver a compact atomic oscillator with stable, accurate frequency output.
Closed-loop error detection and timing adjustment correct quartz oscillator drift to keep time-sequence control signals accurate.
Localizing rubidium atoms within an optical trap enables angular spectral filtering that blocks 778 nm scatter while passing 775.8 nm fluorescence.
Localized rubidium atoms and narrow-angle spectral filtering raise fluorescence signal-to-noise ratio for more stable oscillator regulation.
Localizing rubidium atoms in a magneto-optical trap narrows fluorescence angles, improving scatter rejection and clock stability.
A flat optical waveguide expands the beam inside a compact vapor-cell clock, cutting thickness and alignment complexity while improving optical stability.
A chip-scale atomic clock replaces GPS timing in smart meters, enabling precise synchronized readings without antenna loss or spoofing risks.
Direct optical readout of NV-center spin states replaces radioactive atoms and radio-wave conversion for longer-life, precise atomic timing.
Sweeping light frequency in a hydrocarbon-coated atomic cell stabilizes Ramsey resonance without buffer gas and reduces frequency drift.
Up and down FMCW chirps measure absorption-peak timing shifts to cancel receiver delay errors and stabilize molecular clock frequency.
Inclined internal reflectors fold the laser path inside an alkali-metal vapor cell, improving compactness, frequency stability, and assembly.
Using sub-THz molecular rotational transitions, this case shows chip-scale clock stabilization with fast start-up, low power, and vibration robustness.
Orthogonal photodetector signals cancel laser noise while coil-based magnetic isolation lets one vapor-cell package switch between atomic clock and magnetometer use.
Binary alkali alloys on a thermally isolated heated die lower vapor pressure, extend atomic sample lifetime, and enable low-power control.
Localized high-wettability areas trap alkali droplets away from the beam path, reducing light shift and stabilizing miniaturized clock signals.
Optical waveguides expand and route light through a vapor cell, shrinking atomic clock thickness while improving stability and assembly simplicity.
An anodically bonded glass-metal gas cell limits leakage and pressure broadening, improving frequency stability in chip-scale mm-wave atomic clocks.
Binary alkali alloys and a thermally isolated heater lower vapor pressure, reducing background collisions and extending atomic sample life.
Asymmetric heater placement creates a temperature gradient that condenses sensor fluid away from the signal path and keeps the window clear.
Multi-threshold residual and drift monitoring detects GPS/GNSS atomic clock jumps and drift early to reduce false alarms and navigation errors.
Multi-threshold residual and model-parameter checks detect GNSS atomic clock jumps and drifts early while limiting false alarms.
Separate dissociation, interrogation, and getter cavities control vapor composition, isolate residues, and protect optical properties.
Inclined internal reflectors fold the laser path inside an alkali-metal vapor cell, enabling compact atomic clock assembly with lower power use.
Sharp-corner condensation sites in a silicon vapor cell keep alkali deposits off the top glass plate, preserving light transmission and clock stability.
Separate reservoir, interrogation, and getter cavities keep dissociation residue out of the optical path while controlling gas composition.
Frit bonding rigidly mounts external atomic sensor components to reduce vibration-induced movement, improve accuracy, and simplify assembly.
An etalon with temperature control passes sideband waves while blocking the fundamental wave, suppressing AC Stark shift and improving atomic oscillator stability.
A semitransparent mirror and second photodetector block harmful back-reflection while enabling laser frequency and cell temperature control.
By adding and accumulating signal time differences, this SOC approach improves TDC precision when low supply voltage degrades voltage-signal SNR.
Passive getter pumps maintain the pressure differential needed to collimate atomic vapor in a compact chip-scale beam layout.
Laser-localized glass sealing preserves dipolar gas purity and pressure, enabling stable mass-produced vapor cells for quantum sensing.
A pillar-and-groove vapor source introduces metal precursor with less dead space, reducing contamination and stabilizing vapor pressure.
Rydberg vapor cells and optical frequency combs enable passive wideband RF sensing with fast scanning, jamming resistance, and precise field measurement.
Rydberg vapor cells use frequency-comb lasers and EIT sensing to detect off-resonance RF signals quickly across wide bands with jamming resistance.
Independent spinner towers compare stationary and rotating states to detect subtle gravitational and electromechanical force differences.