• Emerging cold atom science and engineering
• Laser locking and frequency control systems
• Liquid crystal waveguide architecture
• Locking lasers to high-finesse cavities

Turnkey Operation: up and running in 30 minutes

Low Noise: supports the best optical clocks and more

Robust: passes demanding shake, vibe, and thermal tests

Stable: remains locked for months

Color Support: lock many lasers with additional options

Deliver: low noise to every laser in your system

Extended Wavelength Coverage 490 nm to 2000 nm with RUBRIColor™

The RUBRICombTM from Vescent is a fully stabilized optical frequency comb with precise control over the repetition rate (ƒrep), the carrier-envelope offset frequency (ƒCEO), and the optical reference beat (ƒopt). At its core is a passively mode-locked erbium-doped fiber oscillator. Our unique approach reduces the system size, weight, and power (SWaP). The complete RUBRICombTM frequency comb is designed and built to ensure stable, low-phase-noise operation, with Allan Deviations supporting the next generation of optical atomic clocks.

The entire laser, including self and external referencing modules, is contained in a single 2U 19” rack mount chassis. The laser mode-locks at startup every time and is specially designed for a robust, long life. Our unique oscillator design also makes it easy to precisely factory-match the repetition rate of several RUBRICombTM combs for multi-comb spectroscopy experiments.

Scalable Commercial Platform

Modular Selectable Wavelengths: for quantum computing, quantum timing system, or sensing

Reliable Performance: built to withstand demanding conditions

Modular Design: adaptable to your solution needs

Compact Footprint: saves space with consistent performance

Seamless Integration: Extension of the RUBRIComb Platform

One of the key challenges hindering the proliferation of optical atomic clocks, neutral-atom and ion-based quantum computers, and quantum sensors is the expensive, bulky, and environmentally susceptible infrastructure required to frequency stabilize the various state-preparation and probing lasers that necessarily operate at disparate wavelengths across the visible/NIR spectrum.

In combination with the RUBRIComb, Vescent’s RUBRIColor provides an extensible commercial platform for transferring frequency stability to any set of selectable wavelengths between 490 – 2000 nm, offering a dramatic reduction in space, cost, and complexity for these applications.

• PID for temperature control over low thermal mass lasers
• Lowest-noise laser controller commercially available
• Two-stage PID temperature control
• High-speed servo and RF inputs
• Current limit and safe turn-on
• High-modulation bandwidth

The D2-105 is a precision diode laser current source, based on the Libbrecht-Hall circuit. With a current noise density <100 pA/sqrt(Hz) is ideally suited for precision spectroscopy and metrology applications. Furthermore, two stages of temperature control provide sub-mK stability, ensuring long-term frequency stability. 

A front panel current servo BNC input enables high-speed (>10 MHz) servo control of the laser frequency. Additionally, extremely high-speed modulation is enabled by a front panel RF port, which is connected directly to the laser current output SMA. This enables the user to directly write sidebands onto the laser via injection current, which can save the use of expensive AOMs and EOMs. To keep 60 Hz harmonics off the output current, the D2-105 is powered with either the linear D2-005 power supply or user-provided power via a breakout board (D2-001).

The D2-105 features two independent PID loop filters for controlling the temperature of your diode laser. The range of parameters for one of these loops is expanded to make it especially easy to temperature-control low thermal mass lasers such as the Photodigm TOSA. It is possible to have the other loop modified to control fast loops also; ask for the -FL option.

The D2-125 laser servo was designed for low-noise servo control of lasers and other experimental systems. The PI2D loop filter, with two-stage integral feedback, provides tight locking to cavities and atomic/molecular transitions. The D2-125 provides full user control over the loop-filter parameters, which enables servo-loop optimization for a wide variety of plants, such as current tuning, acousto- and electro-optic modulators, voice coils, piezo actuators, etc.

• Both PZT & Laser Current Feedback
• Double Integrators For Tight Locking
• Frequency Jumping and Lockup via Computer Control
• Internal Ramp Generator
• High Bandwidth (10 MHz)
• Reconfigurable PI²D Loop Parameters
• Lock Guard & Ramp Centering included on all models
• Optional Peak Locking (-PL)

The D2-135 Offset Phase Lock Servo (OPLS) is designed to precisely control and quickly adjust the frequency detuning between a master and a follower laser. The D2-135 forms a complete offset lock system when combined with the D2-250 Heterodyne Module and D2-260 Beat Note Detector. The D2-250 overlaps the free-space master & follower lasers to generate the optical beat note. It then couples the beat note into a fiber for delivery to the D2-260, where it is down-converted to the RF and then delivered to the D2-135 to be servoed.

• Offset Phase Locks from 250 MHz to 9.3 GHz
• Precisely control follower laser frequency while remaining referenced to the primary standard
• User-adjustable servo parameters
• Internal ramp generator
• Fast frequency jumps with feed-forward
• Offset frequency stability determined by reference stability

The SLICE-DCC is a compact, efficient CW current controller for driving pump diodes; semiconductor optical and tapered amplifiers; and diode, interband, and quantum cascade lasers. Part of the Vescent SLICE series of high-performance, economical photonic control electronics, SLICE-DCC offers two channels of low-noise current control. Proprietary self-adjusting power supply technology automatically sets the compliance voltage to as high as 12 V but no higher than necessary to drive your load‚ allowing you to drive a traditional diode or a quantum cascade laser with the same device and the same efficiency.

The SLICE-DHV is a low-noise, high-bandwidth amplifier for controlling piezoelectric transducers. Designed for controlling PZT-driven tuning elements in lasers and cavities, it interfaces easily with laser systems, allowing optimum control. 

The SLICE-DHV features two gain levels. The first is a traditional 20x which gives the user access to the full 0-200 V range with a 0 to 10 V input signal. The SLICE-DHV can also operate at a gain of one (in conjunction with a DC bias), allowing lower-noise control of a ±10 V range. A wide output range (0-200 V), high current capacity (±200 mA), and low noise (450 µV rms) make this amplifier ready to take on any number of high-voltage applications.

The SLICE-DLC is a dual-channel precision diode laser controller. Each channel offers an ultra-low noise current source and two temperature control loops. With a current noise density less than 100 pA/√Hz, the SLICE-DLC is ideally suited for precision spectroscopy and metrology applications. Dual-stage temperature control for each channel enables sub-millikelvin stability of the diode, resulting in minimal frequency fluctuations and drift.

A current servo input enables high-speed (≥10 MHz) control of the laser frequency. High-speed RF modulation enables the user to easily write sidebands onto the laser via injection current, and facilitates a PDH-style peak lock without the use of expensive lock-in amplifiers and modulators.

Able to control TECs or heaters, the SLICE-QTC can perform temperature stabilization of semiconductor optical amplifiers, tapered amplifiers, optical cavities, PICs, and nonlinear & photonic crystals. Auto tune enables easy loop optimization to achieve sub-milikelvin temperature performance. Widely adjustable PID corners and gain permit use with a wide variety of temperature plants. The loops can be nested or control four separate systems. 

The ability to set slew rate control, maximum temperature, and configurable safety outputs ensures protection of delicate photonics devices such as doubling crystals. 

With exceptional temperature control, safety, and convenience features, choose the SLICE-QTC and eliminate thermal instability as your limiting factor. 

The SLICE-OPL Offset Phase Lock Servo (OPLS) is designed to precisely control and quickly adjust the frequency detuning between a master and a follower laser. The SLICE-OPL forms a complete offset lock system when combined with the D2-250 Heterodyne Module and D2-260 Beat Note Detector. The D2-250 overlaps the free-space master & follower lasers to generate the optical beat note. It then launches the beat note into a fiber for delivery to the D2-260 where it is down-converted to the RF and then delivered to the SLICE-OPL for processing.

The D2-200 laser module is a complete redesign of the robust Distributed Bragg Reflector (DBR) diode laser. The D2-200 houses a new Virtual Point Source (VPS) DBR laser. The VPS design uses a proprietary lensing system to reduce astigmatism, matching the divergence in the fast axis to that of the slow axis. The output is near Gaussian with a very low M2.

DBR laser diodes are fabricated with the feedback grating patterned directly adjacent to the gain region of the diode. By virtue of this short cavity with no moving tuning element, they are highly immune to vibrations and acoustic perturbations. The short cavity allows mode hop-free current tuning over more than 25 GHz. The tuning is very fast and is amenable to high-bandwidth servo control for easy locking to atomic and molecular transitions or offset locking to a reference laser. 

The D2-200 employs two stages of temperature-control and incorporates optical isolation for dependable long-term, mode hop-free operation. It has undergone a Design for Manufacturability process (DFM) to reduce drift in alignment, making for a more reliable design than its highly popular predecessor.

The D2-210 Saturated Absorption Spectroscopy Module is an integral piece of  Vescents complete line of photonics tools supporting the AMO Community. 

Vescent's, D2-210 second-generation Spectroscopy Module makes locking to atomic transitions easier and more powerful than ever before. Completely redesigned to maximize performance in a number of laser-locking environments, the D2-210 makes atomic absorption-referenced frequency locks simple.

Designed to work as a general-purpose frequency discriminator, it is compatible with the D2-125 Laser Servo as well as other feedback loop filters. The D2-210 can be charged with either Potassium, Rubidium, or Cesium. It is magnetically shielded to reduce perturbations due to magnetic fields, and accommodates free-space or, optionally, a fiber-coupled input.

The D2-250 Heterodyne Module is designed to conveniently overlap leader & follower lasers to produce an optical beat note for the use with the D2-260. New kinematic adjustment mounts make it easier and faster than ever to co-align leader and follower lasers. The use of rotatable waveplates at the inputs and polarizing beam splitters allows adjustment of pick off a percentage for accepting a large range of powers.