FQCW266-1200 High Power UV Laser
High-Power 266 nm Laser with 1,200 mW Output for Maximum Precision
The FQCW266-1200 – a high-power UV laser, stands for exceptional stability, efficiency, and longevity in the UV range. With a central wavelength of 266 nm and an output power of 1,200 mW, this laser delivers outstanding performance for demanding applications in both industry and research.
Power Flexibility
The FQCW266 – High Power UV Laser platform allows for flexible power options. Based on a common platform, nominal output power levels of 300 mW, 600 mW and 1,200 mW are available. The nominal output power can even be adapted to a different level during refurbishment. This offers maximum flexibility in terms of application requirements and power reserve.
Longevity & Easy Maintenance
The integrated Automatic Crystal Shifter (ACS) optimally utilizes the conversion crystal – significantly increasing lifespan and extending the maintenance interval to up to 16,000 operating hours.
Thanks to the air-cooled aluminum housing, no water cooling circuit is required.
For operation, a purge at the exit window with CDA (Clean Dry Air) or nitrogen (N₂) is sufficient – no internal gas management is needed.
Smart Control & Connectivity
Control the FQCW266 laser as needed:
- Manually at the push of a button
- Software-controlled via our control interface
- Externally via RS232, USB, or Ethernet
Designed for Continuous Operation
The FQCW266 – High Power UV Laser Series is designed for 24/7 applications in industrial environments – ideal for OEM customers in semiconductor manufacturing or high-precision research applications.
With a typical warm-up time of just 30 minutes and an average power consumption of 200 W, it impresses with efficiency and reliability at low operating cost.
Technical data:
| Wavelength | 266 ± 0.05 nm |
| Output Power, Nominal | 1,200 mW ± 5 % |
| Output power, Adjustability | 120 mW to 1,200 mW |
| Line Width | < 300 kHz |
| Beam Propagation Factor M² (Average) | < 1.3, TEM00 |
| Beam Propagation Factor M²x (Horizontal) | < 1.2, TEM00 |
| Beam Propagation Factor M²y (Vertical) | < 1.35, TEM00 |
| Polarisation Orientation and Purity | Vertical, > 500:1 |
| Beam Diameter | 1.1 ± 0.3 mm |
| Beam divergence | < 0.45 mrad |
| Static Alignment Tolerance (1) | Lateral ± 0.25 mm | angular ± 2.5 mrad |
| Spot-to-Spot Beam Pointing Variation (2) | ± 225 μrad |
| Power Stability (0.5 Hz over 8 h) | < 0.2 % rms |
| Power Noise (1 Hz – 100 kHz) | < 1 % rms |
| Power Noise (100 kHz – 250 MHz) | < 0.2 % rms |
(1) Position and angle of static alignment tolerances are specified with regard to laser beam exit.
(2) Refers to adjacent spots on non-linear UV crystal.
| Typical UV Crystal Spot Lifetime | 2,000 hours |
| Typical Lifetime (before First Service) | 16,000 hours |
| Power Consumption Mean (Max) | < 200 W (450 W) |
| Line Voltage | 90 to 250 V AC (50 to 60 Hz) |
| Communication Interfaces | USB | RS232 | Ethernet |
| Safety features | Key Switch | Interlock | Electrical Shutter |
| Warm-up time (Max) (3) | 30 min (45 min) |
| Operating Temperature (Laser Head) | 20 °C to 25 °C non-condensing |
| Cooling via Bearing Surface, Required Thermal Resistance (4) |
1/40 K/W @ 25 °C | 1/20 K/W @ 20 °C Cooling Surface |
| Laser Head Dimensions | < 120 x 310 x 715 mm³ (H x W x L) |
| Control Unit Dimensions | < 184 x 483 x 411 mm³ (H x W x L) |
| Laser Head Weight | < 36 kg |
| Controller Unit Weight | < 12 kg |
(3) Warm-up in the temperature range 20 – 25 °C, temperature change < 1 K/h.
(4) Different cooling options (e.g. air flow, water cooling) available upon request.
| Purge Supply for Laser Exit Window | Flow 0.5 l/min CDA, SH < 10 PPM or N2 (Purity Grade 5.0 “Scientific” or Better) |




