Vescent Photonics

Precision Electro-Optic and Laser Technologies

 

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.

Applications

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

SLICE Series

SLICE-QTC four-Channel             Temperature Controller

  • Four independent PID temperature control loops
  • 40 W user-routable capacity
  •  Programmable front-panel I/O
  •  Auto tuning function
  •  GUI, serial, or touch screen interface

 

 

 

 

 

The SLICE series combines low noice analog circuitry with digital user interface including touch screen and progammable I/O-monitor.

 

 

Download
Specifications Sheet
VP_MGOS_SLICE-QTC_Datasheet_5.1.pdf
Adobe Acrobat Dokument 640.0 KB

SLICE-DLC Dual-Channel               Laser Controller

  • Two channels of current control each with two channels of temperature control
  • Lowest-noise laser controller commercially available
  • Automatic LIV Curve Capture
  • Sub-millikelvin temperature stability with properly designed plant
  • Hybrid switching/linear power supply accepts all AC line voltages
  • High-speed servo and RF inputs
  • Current limit and safe turn-on
  • High servo and modulation bandwidths
Download
SLICE-DLC-preliminary
Data_Sheet_SLICE-DLC_v4.pdf
Adobe Acrobat Dokument 2.7 MB

SLICE-DCC Dual-Channel Current Source

SLICE-DCC Dual-Channel Current Controller low-noise current source with megahertz modulation bandwidth.

  • Two independent channels
  • Low noise
  • High modulation bandwidth
  • Automatically adjusting compliance voltage to 12V
  • Touch screen control
  • Host GUI & API
  • Current limit
  • Interlock other devices based on temperature control fidelity
Download
Specifications Sheet
200106_SLICE-DCC_4.0.pdf
Adobe Acrobat Dokument 731.2 KB

SLICE-OPL                                      Offset Phase Lock Servo

  • Offset Phase Locks from 10 MHz to 9.3 GHz
  • Touch screen GUI
  • No oscilloscope is required to operate!
  • Precisely control follower laser frequency while remaining referenced to the primary standard
  • Tightly lock ƒCEO and ƒopt or ƒrep for frequency comb stabilization
  • User-adjustable servo parameters
  • Internal ramp generator
  • Fast frequency jumps with feed-forward
  • Offset frequency stability determined by reference stability

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.

Download
Data_Sheet_SLICE-OPL_240722_01.pdf
Adobe Acrobat Dokument 975.5 KB

SLICE-DHV Dual-Channel Controller and High Voltage Amplifier

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.

  •  Two channels
  • high bandwidth
  •  Low noise

Applications:

  • ECDL tuning & locking
  • Repetition rate control
  • Fiber stretcher
  • Micropositioning
Download
VP_slice-dhv_dual-channel_high-voltage_a
Adobe Acrobat Dokument 1.4 MB


D2-200 DBR Lasers

  • Potassium, Rubidium, and Cesium Wavelengths
  • Vibration immune: no moving parts or piezos
  • 25 GHz mode hop-free tuning via high-bandwidth injection current
  • Optically isolated for spectral purity
  • Fiber-coupled configurations
  • High-speed modulation
  • Up to:
    • 100 mW at 780, 795, & 828 nm
    • 130 mW at 852 nm
    • 150 mW at 895 nm

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.

 

D2-210 Spectroscopy Module

  • Configurable for Potassium, Rubidium, or Cesium
  • Side or Peak Locking
  • Temperature stabilized
  • Intensity normalized
  • Magnetic shielding
  • Terminal or pass-through configuration
  • Improved mechanics
  • Optional Doppler subtraction and fiber coupling
  • 5 MHz loop bandwidth

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.

Download
Specifications Sheet
VP-MGOS_D2-210_3.1_1.pdf
Adobe Acrobat Dokument 518.6 KB

Download
Specifications Sheet
VP_MGOS_D2-200 DBR Laser.pdf
Adobe Acrobat Dokument 1.9 MB

Servo-Electronics, Laser-Controller

D2-125 High Speed Laser Servo

  • Both PZT & Laser Current Feedback
  • Double Integrators For Tight Locking
  • Peak Lock Option
  • 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

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.

Download
Specifications Sheet
VP_MGOS_D2-125 High-Speed Laser Servo.pd
Adobe Acrobat Dokument 470.8 KB

D2-105 Laser Controller

  • Lowest noise current source 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 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. 

Download
Specifications Sheet
VP_MGOS_D2-105 Laser Controller_9_0.pdf
Adobe Acrobat Dokument 525.3 KB


D2 Power Supply

  • Low noise
  • Provides ±15V and 5V
  • D2 series power supply
  • AC input voltages of 100, 120, or 230 V

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.

Download
D2-005 Data-Sheet.pdf
Adobe Acrobat Dokument 9.7 MB

D2-135 Offset Phase Lock Servo

  • Offset Phase Locks up to ≥9.5 GHz
  • Feed forward for fast frequency jumping
  • Offset Frequency stability determined by external reference stability
  • User-adjustable servo loop parameters
  • Internal ramp generator
  • Options for optical or electronic beat-note input

 

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.

 

Download
Specifications Sheet
VP_MGOS_D2-135 Offset Phase Lock Servo.p
Adobe Acrobat Dokument 660.6 KB



Frequency Combs

RUBRIComb Frequency Comb

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.

Download
Vescent DataSheet_RUBRIComb_MGOS_2025.pd
Adobe Acrobat Dokument 4.7 MB

RUBRIColor™ Wavelength Extension

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.

 

  • 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