QBU-Series High Voltage Pockels Cell Drivers with Adjustable Pulse Width

• Triggering by an arbitrary external TTL signal output provides various operating schemes, any durations
• Up to 6 kV output voltage
• Up to 100 kHz repetition rate
• < 15 ns (about 10 ns typ.) both rise/fall time
• Compact easy-to-built-in design

Applications of QBU-Series Pockels Cell Drivers

QBU-series Pockels cell drivers are high-voltage pulse drivers optimized for fast electro‑optic modulation of laser beams. They support high repetition rates, fast rise/fall times, adjustable amplitude and pulse width, and uniquely long pulse durations (up to quasi‑DC), making them suitable for a wide variety of industrial, scientific, and OEM laser systems.

Laser Q-Switching and Cavity Dumping

• Active Q-switching of solid-state lasers (Nd:YAG, Nd:YVO4, Yb-based lasers) for generation of short, high-peak-power pulses.
• Cavity dumping and cavity lifetime control in mode-locked and CW lasers.
• Repetition-rate control of pulsed lasers via fast on/off modulation of cavity losses.
• Energy scaling and pulse shaping in industrial micromachining and materials processing lasers.

Electro-Optic Modulation and Beam Gating

• Fast optical shutters and beam gates for turning laser beams on and off within nanoseconds to microseconds.
• Pulse picking from high repetition rate mode-locked oscillators and amplifiers.
• Temporal gating in time-resolved experiments, fluorescence lifetime measurements, and pump–probe setups.
• Intensity modulation and pulse-width control using Pockels cells as variable attenuators.

Ultrafast and Time-Resolved Laser Experiments

• Pump–probe spectroscopy requiring precise synchronization of optical gates with ultrafast laser pulses.
• Time-resolved spectroscopy and imaging (fluorescence, transient absorption, photoluminescence).
• Streak camera and detector gating where high-voltage, fast-edge signals are required to gate the sensor.
• Laser pulse contrast enhancement via selective transmission and suppression of pre- and post-pulses.

Nonlinear Optics and Frequency Conversion Systems

• Temporal control in OPO/OPA systems using Pockels cells for precise seeding and extraction timing.
• Synchronization of pump and signal pulses in nonlinear frequency conversion setups.
• Gating and switching in harmonic generation stages (SHG, THG, etc.) for improved efficiency and stability.
• Electro-optic sampling and THz generation/detection where accurate high-voltage modulation of EO crystals is needed.

Laser Amplifiers and Chirped Pulse Amplification (CPA)

• Pockels cell switching in regenerative amplifiers for injection and extraction of pulses.
• Pulse selection and timing in multi-stage amplifier chains.
• Gain control and pulse energy management through cavity and beamline gating.
• CPA systems requiring long hold times and stable high-voltage levels between triggers (benefiting from pulses up to DC).

Scientific and Laboratory Instrumentation

• General-purpose Pockels cell driving in physics and photonics research laboratories.
• Electro-optic sampling setups for measuring ultrafast electric fields.
• Optical clocking and signal routing in advanced optical communication testbeds.
• Laboratory beamline safety shutters requiring fast and reliable optical cut-off.

Microscopy and Imaging

• Time-gated imaging to improve contrast and reject background or scattered light.
• Fluorescence lifetime imaging (FLIM) and time-correlated single-photon counting (TCSPC) gating.
• Two-photon and multiphoton microscopy beam gating synchronized with scanning and detection.
• Structured illumination and optical sectioning using rapidly modulated Pockels cells.

Lidar, Remote Sensing, and Rangefinding

• Lidar transmitter gating to shape and control the timing of emitted laser pulses.
• Receiver-side gating to suppress near-field signals and improve distant target detection.
• Atmospheric and environmental sensing where precise temporal windows improve signal-to-noise ratio.
• Time-of-flight measurements in industrial distance measurement and 3D mapping systems.

Quantum Optics and Quantum Information

• Fast optical switching in single-photon experiments and quantum communication testbeds.
• State preparation and measurement using polarization control with Pockels cells.