2002 Vescent Photonics was founded by Dr. Mike H. Anderson. He is the lead author of „Observation of Bose-Einstein Condensation in Dilute Atomic-Vapor“ (1995).
The focus of Vescent is to develop and manufacture technologies like waveguides, electro-optics, tunable lasers, and electronics for precision laser control.
The SLICE series combines low noice analog circuitry with digital user interface including touch screen and progammable I/O-monitor.
SLICE-DCC Dual-Channel Current Controller low-noise current source with megahertz modulation bandwidth.
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 SLICE-DHV is a low-noise, high-bandwidth amplifier for controlling piezoelectric transducers. Designed for controlling pzt-driven tuning elements in ECDLs and cavity length control systems, it will interface easily with home-built or 3rd-party laser systems allowing optimum control.
Applications:
The D2-200 laser module is a complete redesign of our 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.
Absorption cell for use in atomic clocks as saturated absorption high precision frequency reference. The cell is thermal stabilized and magnetically shielded. The unit is compatible to the VP-D2-DBR200 Laser and all driver and loop units of the D2-series.
The D2-125 High Speed Laser Servo is an ultra-low noise and broad band control loop. Laser can be looked an absorption lines to serve as an absolute frequency standard. Typical applications are atomic clocks, Pound-Drevel-Hall cavity locking and laser stabilization and control. The D2-125 can also be used to reduce the line width of laser sources to facilitate spectroscopy of single molecules. The included Lock Guard detects when the servo loop filter has gone out of lock and automatically tries to recapture lock.
The D2-105 Laser Controller is a precision diode laser current source based on the Libbrecht-Hall circuit. With a current noise density <100 pA/√Hz, the D2-105 has lower noise than any other commercially available laser controller. This ultra-low current noise is ideally suited for use with the D2-125 laser servo. Using the two devices in combination allows the realization of ultra-stable and -narrow lasers.
The D2-005 power supply is a quiet, linear power supply providing ±15V and 5V. It is in a separate box to isolate 60 Hz and EM interference. One power supply can power two complete laser systems or four electronics modules. The linear design eliminates noise around 100-200 kHz seen in switching power supplies.
The D2-135 Offset Phase Lock Servo (OPLS) is designed to stabilize two lasers via Difference Frequency Generation (DFG). The D2-135 works together with the D2-250 Heterodyne Module and the D2-160 Beat Note Detector. The D2-250 overlaps the master and slave lasers and launches the optical beat note into a multimode fiber where it is delivered to the D2-160, converted to an electrical beat note and supplied to the D2-135. View a typical configuration for using the D2-135.
RUBRIComb™ Leading Application Solutions:
Atomic Clocks and Time Transfer
Quantum Computing
Dual Comb Spectroscopy
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
The RUBRIComb™ 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.
RUBRIColor™
An extension of precision, a modular system for customizable laser wavelength locking.
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.