TIME & FREQUENCY STANDARDS

Timekeeping

Made for precision and performance

Precise time and frequency standards are needed for modern communication, radar, and navigation systems. Recently, lab-based optical atomic clocks have demonstrated orders-of-magnitude improved performance over traditional microwave standards that are used in GPS. This performance improvement is due to the higher quality factor for optical atomic transitions. 

FREQUENCY STANDARDS & COMBS

Portable standards and combs

AOSense develops portable optical frequency standards and self-referenced frequency combs designed for simplicity and ruggedness.

AOSense Atomic Clock

AOSENSE STANDARDS

Strontium-optical frequency standard

AOSense has developed a portable strontium-optical frequency standard with an integrated laser system and a physics package. A demonstration showed a deviation of 8×10-13 after one second and 5.4×10-15 after two hours.

AOSENSE CLOCKS

Cold-atom microwave clock

In 2018, AOSense sold its first cold-atom microwave clock.  A demonstration showed that it supports moving platform operation, possesses 5x better stability than 5071a, and is orientation insensitive.

AOSense Erbium Fiber Frequency Comb

AOSENSE COMBS

Erbium fiber frequency comb

The AOSense frequency comb is a low noise, polarization maintaining (PM) device. Key features include a PM fiber architecture centered at 1550nm with turnkey modelocking; a free-running linewidth of the carrier-envelope offset frequency of <200 kHz; a temperature-insensitive all-fiber f-2f interferometer exhibiting fceo beatnotes with SNR > 45dB (300 kHz RBW); and dual fast/slow cavity length actuators with a bandwidth of >300 kHz.

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