PID 110
Versatile PID Regulator
• Ideally suited for side-of-fringe laser stabilization • P, I, D parameters individually adjustable
• Variable total gain • High Voltage output e.g. for driving piezos • Automatic ReLock feature
The PID 110 is a proportional-integral-differential regulator for frequency stabilization of tunable diode lasers (DL pro, DL 100, DL DFB). It accomplishes side-of-fringe locking to the slope of an atomic line or a cavity transmission peak. The module works both for HV (piezo actuators) and LV (laser current) control tasks. Users can adjust all relevant parameters, including P, I and D contributions, set point and regulator output range.
Applications
• Metrology • Cavity ring down spectroscopy • Resonant enhancement for frequency doubling
Specification
• Side-of-fringe stabilization
• Regulator output -5 .. +150 V, max 30 mA
• External modulation input -5 V .. +5 V
• LV small-signal bandwidth up to 1.5 MHz
• Gain * bandwidth product 3 MHz (for gains ≥ 2)
• HV small-signal bandwidth > 10 kHz (current limited to 30 mA)
Accessible Parameters
• P, I, D -contribution of the control loop individually adjustable by precision trimmers
• Adjustable regulator set point for side-of-fringe stabilization
• Lock status display with 3 LEDs (search, unlock, reset)
• Ramp/Modulation ON/OFF switch and regulation ON/OFF switch
• Inversion of the control output with switch POS/NEG
• On request a relock-mechanism can be activated (automatic search for the next stabilization mode) when stabilizing on external resonators, FPI´s etc., indicated by red relock-LED
• External modulation input or internal synchronization with scan control SC 110 possible
• Controller ON/OFF switch
• HF-tight cassette, width 12 TE (60 mm)
Input / Outputs
• SubD9 connector for actual signal in, controller output voltage
• BNC connectors for external modulation input
• BNC connector for buffered monitor signal, modulation, HV/100, controller output, error signal, signal in, set point
• BNC connector for regulator output: -5...150 V, max 30 mA