ORSUltrastable Laser System
K E Y S P E C I F I C AT I O N S■ Stability <7 x 10-16 at 1 s(with FS-XTAL Option)■ Linewidth <1 Hz■ Output Power >10 mW■ Wavelength

500–1600 nm (IBS Coatings)
900–1600 nm (XTAL Coatings)

A P P L I C AT I O N S■ Optical Clocks■ Quantum Computing■ Ultra-low Noise Microwave Generation■ Frequency Comb Stabilization■ High Resolution Spectroscopy■ Laser Cooling and Trapping

The Optical Reference System (ORS) is designed for uncompromised performance. It delivers ultra-narrow linewidth laser light with outstanding frequency
stability.
The system’s centerpiece is a high-finesse Fabry-Pérot cavity (cylindric spacer
with a length of 12.1 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 decoupledfrom vibrations and acoustically isolated allowing for ultimate performance also
in rough laboratory environments. An easy-to-use cavity-locking mechanism
ensures portability without 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 versatility 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 ora GUI on a remote PC. The onboard software ensures automatic cavity locking
and system monitoring.

OPTIONS■ Fused Silica Mirrors (FS-IBS)■ XTAL Mirror Coatings (FS-XTAL)■ Mirror Coating for Multiple Wave-lengths■ EOM Sideband Lock (Tunable FrequencyShift)■ AOM Frequency Shift■ Fiber Noise Cancellation■ Second Harmonic Generation■ High Output Power■ Cavity De-drifting■ Digital Servo Interface for Stabilisation
to External Atomic Transition

ORS

Ultrastable Laser System
S P E C I F I C AT I O N S
Wavelengths

500–1600 nm (IBS Coatings), 900–1600 nm (XTAL Coatings)

Stability (MADEV at 1 s, Linear Drift Removed) <7 x 10-16 (with FS-XTAL Option)<1 x 10-15 (with FS-IBS Option)<2 x 10-15 (with ULE-IBS, Standard System)Linewidth<1 Hz
Phase Noise (Laser Source Dependent)
ULE-IBSFS-XTALat 10 Hz
-7 dBc/Hz-13 dBc/Hz
at 100 Hz-47 dBc/Hz-47 dBc/Hz
at 1000 Hz-70 dBc/Hz-70 dBc/Hz

For all Models
Spurious Signals <-20 dBc

Output Power
Cavity Spacer
Free Spectral Range
Linear Drift Rate
Vibration Isolation Platform
Dimensions / Weight
REQUIREMENTS>10 mW (FC/APC Connector), High Power on Request
12.1 cm, ULE, Cylindric Design
1.24 GHz
approx. 150 mHz/s
Included
590 x 800 x 1550 mm (29U) / 260 kg

Operating Voltage
Line FrequencyOperating TemperaturePower Consumption

100 / 115 / 230 VAC/2055
50 to 60 Hz
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ORSPlease call for pricing. Specifications are subject to change without notice. Custom modifications are available, please inquire.

Menlo Systems GmbHT+49 89 189 166 0sales@menlosystems.com

www.menlosystems.com

ϲKĨĨƐĞƚĨƌĞƋƵĞŶĐǇ΀,ǌ΁ǀĞƌĂŐŝŶŐƚŝŵĞ΀Ɛ΁Menlo Systems US
T+1 303 635 6406
ussales@menlosystems.com

Menlo Systems Japan
T+81 907 409 20 21
jpsales@menlosystems.com

Invisible laser radiation
avoid exposure to beam
Class 3b laser

Menlo Systems ChinaT+86 21 6071 1678
chinasales@menlosystems.com

D-ORS-EN 03/06/24