Features
Stable output specifications, intelligent triggering and easy operation make NL303D series nanosecond lasers an excellent choice for most liquid and many air-based PIV (particle image velocimetry) applications. Extremely low jitter of optical pulse with respect to sync pulse allows reliable synchronization with external equipment.
Optional double UV (355 nm) pulse models allow pumping of double‑pulse optical parametric oscillators. Operating convenience is achieved through versatile triggering capabilities and adjustable delay between pulses. Simple and proven design allows offering of models for the most common as well as novel research needs. Excellent pulse energy stability and beam quality establish Ekspla lasers as ideal for tasks where high precision and exceptional performance are required. Compact power supply and cooling units easily fit under tables thus saving valuable laboratory space. For customer convenience the laser is controlled through either its RS232 type PC interface with LabView™ drivers (included) or a user-friendly remote control keypad. Both options ensure easy control of laser settings.
| Model | NL301D | NL303D |
|---|---|---|
| Main specifications 1) | ||
| Pulse energy | ||
| at 1064 nm | 2 x 400 mJ | 2 x 720 mJ |
| at 532 nm | 2 x 180 mJ | 2 x 340 mJ |
| at 355 nm | 2 x 100 mJ | 2 x 190 mJ |
| at 266 nm | 2 x 40 mJ | 2 x 90 mJ |
| Pulse energy stability (StdDev) | ||
| at 1064 nm | < 1 % | |
| at 532 nm | < 1.5 % | |
| at 355 nm | < 3 % | |
| at 266 nm | < 3.5 % | |
| Pulse repetition rate | 10 / 20 Hz 2) | |
| Pulse duration 3) | 3 – 6 ns | |
| Delay between pulses 4) | 30 ns – 7.5 ms | |
| Power drift (StdDev) | ±2 % at 1064 nm | |
| Beam divergence 5) | < 0.5 mrad | |
| Optical pulse jitter (StdDev) | ≤ 0.5 ns | |
| Focusability | <2X diffraction limit at 1064 nm | |
| Beam pointing stability | ± 50 µrad at 266 nm | |
| Linewidth | < 1.4 cm-1 at 532 nm | |
| Beam profile | Top Hat in near field, near Gaussian in far field | |
| Beam diameter 6) | 6 mm | 8 mm |
| Polarization | horizontal, <90% at 1064 nm | |
| Physical characteristics | ||
| Laser head (W × L × H) | 320 × 820 × 220 mm | |
| Power supply/cooling cabinet size (W × L × H) | 555 × 600 × 460 mm (water-water cooling) (MR-9) 555 × 600 × 660 mm (air-water cooling) (MR-12) |
|
| Umbilical length | 2.5 m | |
| Operating requirements | ||
| Water consumption (max 20 °C) | < 10 l/min | |
| Ambient temperature | 18 – 27 °C | |
| Relative humidity | 5 – 80 % (non-condensing) | |
| Power requirements | 208-230 V AC, single phase 60 Hz | |
| Power consumption | < 3 kVA x 2 = 5 kVA | |
1) Specifications are subject to changes without advance notice.
2) 20 Hz is available, please inquire for detailed specifications.
3) FWHM at 1064 nm.
4) Variable by 125 ns step. Can be adjusted virtually to any value when externally triggered.
5) Full angle at FWHM level.
6) Measured at 1/e² level.
