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-QT 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.
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-DBR100 Laser and all driver and loop units of the D2-series.
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.
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.
D2-100 DBR Lasers
- Up to 100 mW at 780 nm
- Up to 180 mW at 852 and 895 nm
- Now available at 767 and 770 nm for Potassium spectroscopy
- Highly Vibration Insensitive: No Moving Parts or Piezos
- 40 GHz Mode Hop-Free Tuning via High Bandwidth Injection Current
- Includes Optical Isolation & Anamorphic Prisms for beam conditioning
The D2-100 Distributed Bragg Reflector Laser is a mechanically robust laser, which is, due to no moving parts, extremely insensitive against vibrations. Furthermore, the laser can be current tuned over more than 40GHz mode-hop free. Available Center Wavelengths (nm): 760, 767, 770, 780, 785, 795, 852, 895, 920, 976, 1064, 1083.
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.