FC1500-ULN Plus
Ultra Low Noise Optical Frequency Comb for Optical Lattice Clocks
The FC1500-ULNplus Ultra Low Noise Optical Frequency Comb brings the system performance to the next level. Additional hardware, optimized components and engineering ingenuity resulted in a perfect flywheel for transferring frequency stability between two or more user-defined frequencies at the 10-19 level. This exceeds the stability of any optical oscillator demonstrated to date, and transcends the stability requirement for optical clocks.
The ability to measure sub-10−18 level frequency shifts can be relevant for applications such as optical clocks in quantum sensing and fundamental physics. Our all polarization maintaining figure 9® mode locking technology together with high bandwidth actuators (>1 MHz) for both the carrier-envelope offset frequency and the repetition rate guarantee ultimate performance.
The performance is proven in an out of loop comparison between two independent ULNplus optical frequency combs, which is integral part of the quality check during factory acceptance of each system. Thus Menlo guarantees and proves by measurement that the outstanding spectral purity of the oscillator is transferred perfectly to the desired wavelength for every system delivered.
FEATURES
■ High Repetition Rate
■ High Bandwidth >1 MHz Actuators for CEO and Repetition Rate
■ Fully stabilized and qualified HMP-VIS/NIR at custom wavelength (500 nm to 2 µm)
■ Turnkey Metrology System. Fully automated, including data evaluation software,
designed for continuous operation
APPLICATIONS
■ Optical Lattice Clocks
■ Optical Clocks
■ Transfer of CW Laser Stability to Full Comb Spectrum from 500 nm to 2 µm
| SPECIFICATIONS | FC1500-250-ULNPLUS |
| Comb Spacing | 250 MHz |
| Accuracy | 1 x 10-18 for t > 100s* |
| Stability▲ | 5 x 10-18 in 1s*r, 5 x 10-19 in 1000 s*△ |
| Integrated Phase Noise | <80 mrad [1 Hz-2 MHz] |
| Linewidth | <1 Hz** |
| Tuning Range of Spacing Between Individual Comb Lines | >2 MHz |
| Tuning Range of CEO Frequency | >250 MHz |
| Laser Outputs | five fiber-coupled, linearly polarized, PM output ports |
| Center Wavelength | 1560 nm |
| Spectral Range | >25 nm (500-1050 nm with M-VIS, 1050-2100 nm with M-NIR) |
| Average Output Powe | >12 mW from each laser port (>60 mW with M-VIS, >200 mW with M-NIR |
| CW Laser Inputs | approx. 1 mW optical power required, wavelength user-defined in the 500- 2100 nm range (more upon request) |
▲spectral purity transfer between fundamental and a user-defined wavelength in the 500-2100 nm range, *phase lock to optical reference,
△modified Allan deviation ( l-type counter, timebase 1ms),
**limited by resolution bandwidth of analyzer
Requirements
Input Requirements- cw optical reference, power level approx.
1 mW (see Menlo ORS datasheet)
- 10 MHz frequency reference, power level +7 dBmOperating Voltage100/115/230 VACFrequency50 to 60 HPower Consumption<500 W, <3kW including chillerCooling Requirementsclosed cycle chiller includedOperating Temperature22 ± 5 °COptical Unit Dimensions/Weight706 x 716 mm, approx. 80 kg***Control Electronics Dimensions/Weight600 x 800 mm, approx. 140 kg***
***Standard system configuration
OPTIONS
Menlo Systems Optical Frequency Combs are complete solutions. The modular system architecture allows for easy additions of more functionality to an existing system. Multiple extensions can be combined in a system.
■ M-NIR: Extension Package
■ M-VIS: Extension Package
■ HMP: High Power Measuring Port
■ P250 PM Pulse EDFA: Erbium-doped Fiber Amplifier
■ M-780: High Power output around 780 nm
■ BDU: Beat Detection Unit
■ LLE-SYNCRO: Laser Locking Electronics
■ Microwave: Ultrastable RF Output
■ GPS: -based 10 MHz Frequency Reference
■ WLM-NIR /WLM-VIS: Integrated Wavelength Meters
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http://www.menlosystems.com
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