ORS-Compact
(Ultrastable Laser System)
Ultrastable Optical Reference with Excellent Phase Noise and Frequency Stability
The ORS-Compact Ultrastable Laser System is designed for high performance in demanding field applications.
It delivers ultra-narrow linewidth laser light with outstanding frequency stability.
The system’s centerpiece is a high-finesse Fabry-Pérot cavity (cubic spacer with a length of 5 cm) serving as a reference for a CW laser.
The cavity is made out of ultra-low expansion glass (ULE) and is operated in vacuum at the point of zero thermal expansion.
The reference cavity is actively decoupled from vibrations and acoustically isolated allowing for ultimate performance also in rough laboratory environments.
Rigid mounting of the cavity ensures portability with out realignment of the optical paths.
The system is operated by the newest generation of Menlo Systems’ proprietary SYNCRO controller—a modular electronics platform designed for versa tility and intuitive use.
It incorporates all required electronics, e.g., a low-noise laser driver and a very fast (analog) servo loop for laser frequency stabilization.
The user controls all parameters using either the 7” front-panel touchscreen or a GUI on a remote PC.
The onboard software ensures automatic cavity locking and system monitoring.
Features
- Compact high performance
- Superior phase stability
- Automated laser locking
- Broad customization
- Field-ready design
- Integrated rack system
Key Specifications
- Stability <2 x 10⁻¹⁵ at 1 s
- Linewidth <1 Hz
- Output Power >10 mW
- Wavelength 650–1600 nm
Applications
- Quantum Computing
- Optical Clocks
- Ultra-low Noise Microwave Generation
- Frequency Comb Stabilization
- High Resolution Spectroscopy
- Laser Cooling and Trapping
Options
- ORS-EOM-SBL:
EOM Sideband Lock
- ORS-FNC:
Fiber Noise Cancellation
- ORS-MWL:
Multiple-Wavelengths Mirror Coatings
- ORS-SHG:
Second Harmonic Generation
- ORS-HP:
High Output Power
- ORS-DDRIF:
Cavity De-drifting
- ORS-DSRV:
Digital Servo Interface for Stabilisation to External Atomic Transition
Specifications
| Wavelength | 650 - 1600 nm |
| Stability (MADEV at 1 s, Linear Drift Removed) | <2 x 10⁻¹⁵ |
| Linewidth | <1 Hz |
Phase Noise (at 1542 nm*, Laser Source Dependent)
*Scaling accordingly for different carrier frequencies | at 1 Hz -7 dBc/Hz at 10 Hz -27 dBc/Hz at 100 Hz -45 dBc/Hz at 1000 Hz -70 dBc/Hz |
| Output Power | >10 mW (FC/APC Connector), high power on request |
| Cavity Spacer | 5 cm, ULE, Cubic Design (developed in collaboration with the NPL, UK) |
| Free Spectral Range | 3 GHz |
| Linear Drift Rate | approx. 150 mHz/s after 12 months |
| Vibration Isolation Platform | included |
| System Dimensions / Weight | 590 x 800 x 900 mm (16U) / 180 kg |
Requirements
| Operating Voltage | 100 / 115 / 230 VAC |
| Line Frequency | 50 to 60 Hz |
| Operating Temperature | 22 ± 5 °C |
| Power Consumption | <150 W |
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