EKSMA DKDP Pockels Cell Q-Switching Kit
| Brand | EKSMA |
|---|---|
| Origin | Imported (Lithuania) |
| Model | DKDP |
| Component Type | Electro-Optic Q-Switch Assembly |
| Operating Principle | Transverse-Field KD*P (Deuterated Potassium Dihydrogen Phosphate) Electro-Optic Modulation |
| Driver Compatibility | DQ-0.2-5 High-Voltage Pulse Driver |
| Typical Switching Speed | <10 ns Rise/Fall Time |
| Voltage Range | ±2–4 kV (Configurable) |
| Aperture | 5–10 mm (Standard Options) |
| Wavelength Range | 1064 nm (Fundamental Nd:YAG), Extendable to 532 nm & 355 nm with AR Coating Options |
| Thermal Stability | ≤0.5°/°C Birefringence Drift |
| Mounting Interface | Standard Ø25.4 mm Kinematic Mount with SM1 Threads |
Overview
The EKSMA DKDP Pockels Cell Q-Switching Kit is a fully integrated, OEM-grade electro-optic modulation system engineered for reliable, high-repetition-rate Q-switching in flashlamp-pumped nanosecond laser oscillators. Based on transverse-field electro-optic operation in deuterated potassium dihydrogen phosphate (KD*P or DKDP), the kit leverages the material’s high electro-optic coefficient (r63 ≈ 27 pm/V), low half-wave voltage (Vλ/2 ≈ 3.5–4.2 kV at 1064 nm for 8 mm aperture), and excellent UV-to-NIR transparency. Unlike longitudinal configurations, the transverse geometry minimizes temporal walk-off and enables sub-10 ns optical switching with high extinction ratio (>100:1 typical) and minimal thermal lensing—critical for stable pulse build-up in high-average-power Nd:YAG and Nd:YLF oscillators. The system is designed for direct integration into industrial and scientific laser cavities requiring deterministic, jitter-free pulse extraction synchronized with flashlamp discharge timing.
Key Features
- Pre-aligned, factory-optimized DKDP crystal assembly with broadband AR coatings (R < 0.25% per surface @ 1064 nm ±10 nm; optional dual-band coatings for 1064/532 nm or 1064/355 nm)
- Integrated high-voltage pulse driver (DQ-0.2-5 model) delivering programmable bipolar pulses (±2–4 kV, rise/fall time <8 ns, pulse width adjustable from 10–200 ns)
- Dedicated low-noise, regulated high-voltage power supply with current-limiting protection and interlock-ready safety circuitry
- Mechanically robust kinematic mount (SM1-threaded, Ø25.4 mm bore) enabling precise angular alignment and long-term cavity stability under thermal cycling
- No external quarter-wave plate required—DKDP’s natural birefringence and optimized electrode geometry enable intrinsic quarter-wave retardation at operating voltage
- Compliant with IEC 61000-6-3 (EMC emission) and IEC 61010-1 (safety for laboratory equipment); CE-marked for EU deployment
Sample Compatibility & Compliance
The kit is qualified for use with standard flashlamp-pumped Nd:YAG rod lasers operating at repetition rates from 1 Hz to 100 Hz, with average powers up to 20 W. DKDP crystal orientation and anti-reflection coating specifications adhere to ISO 10110-3 (surface figure) and ISO 10110-7 (coating performance). All electrical subsystems meet EN 61326-1 (measurement/control lab equipment EMC) and support GLP-compliant installation documentation. Traceable calibration certificates (voltage output, timing jitter, extinction ratio) are available upon request for FDA-regulated manufacturing environments requiring audit-ready records per 21 CFR Part 11.
Software & Data Management
While the DQ-0.2-5 driver operates in standalone analog-trigger mode (TTL-compatible input, 5 V logic), optional USB- or RS-485-enabled digital control modules provide full remote parameterization via ASCII command protocol. LabVIEW™, Python (PySerial), and MATLAB® drivers are supplied with firmware version 2.1+. All configuration changes—including pulse polarity, delay offset (0–100 µs resolution), and voltage ramp rate—are logged with timestamp and user ID in non-volatile memory, supporting electronic record integrity for ISO 9001 and GMP workflows. Audit trails comply with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available).
Applications
- Q-switched pulse generation in industrial marking, drilling, and micromachining systems
- Seed injection for MOPA architectures requiring low-jitter master oscillator synchronization
- Time-resolved fluorescence lifetime measurement (FLIM) and LIDAR transmitter gating
- Ultrafast amplifier pre-pulse suppression and cavity-dump triggering
- Research-grade cavity dumping in tunable OPO and Raman-shifted laser systems
- High-speed optical shuttering for pump-probe spectroscopy (sub-ns temporal resolution)
FAQ
What is the maximum recommended repetition rate for continuous operation?
For stable thermal management without active cooling, the kit supports up to 50 Hz at 1064 nm with ≤10 mJ/pulse. At 100 Hz, forced-air cooling of the DKDP mount is advised.
Can the DKDP cell be used at 532 nm without re-coating?
No—standard AR coatings are optimized for 1064 nm only. Dual-band (1064/532 nm) or triple-band (1064/532/355 nm) coatings must be specified at order time.
Is the DQ-0.2-5 driver compatible with third-party TTL signal generators?
Yes—input accepts standard 5 V CMOS/TTL signals with ≥10 ns pulse width and ≥10 kΩ impedance. Jitter is typically <150 ps RMS when triggered from low-phase-noise function generators.
Does the kit include alignment verification tools?
Yes—a calibrated half-wave plate, Glan-Taylor polarizer, and HeNe alignment laser (632.8 nm) are included in the OEM delivery package for cavity polarization verification.
What is the warranty coverage and service support window?
EKSMA provides 24 months limited warranty covering material and workmanship defects. Extended calibration and preventive maintenance contracts are available through authorized regional service centers in Germany, USA, and Singapore.
