Single frequency · FREQUENCY DOUBLING AND LASER COOLING

1112 nm Fiber Laser

The QTekLaser™ 1112 nm Fiber Laser delivers ultra-stable, narrow-linewidth (<10 kHz) output up to 10 W from a reliable all-fiber, polarization-maintaining design. Integrated with an intuitive IoT-enabled control system and housed in a 4U 19" rack-mount chassis, it is purpose-built for frequency doubling to 556 nm, cooling, trapping, and other cold-atom applications.

10 W
Power
<10 kHz
Linewidth
<-130 dBc/Hz
Relative Intensity Noise (RIN)
Request a quoteDownload datasheet
1112 nm fiber laser
Need a different wavelength? The 1112 nm system is one configuration of our single-frequency fiber platform covering 1012–1112 nm. We routinely build custom wavelengths across this range. Tell us your target line.
Request your wavelength →

Features

High output power (10 W)
High reliability with all-fiber design
Narrow linewidth (<10 kHz)
Excellent power stability (<1%)
User-friendly interface via IoT technology
4U 19" Rack mount
Certified to IEC 60825-1:2014 safety standards

Applications

Laser cooling and trapping
Atomic interferometry
Quantum sensing
Quantum computing
Precision measurement

Single Frequency

QTekLaser™ amplifiers work with various kinds of seed lasers. They can be economical semiconductor diode lasers with MHz laser linewidth, robust fiber lasers with kHz linewidth, or cavity-locked ultra-stable lasers with Hz linewidth. Based on customer requirements, we can recommend the best options and integrate them into the laser system as illustrated in figure 2.

Diagram of a typical QTekLaser laser system. Seed laser and multi-stage amplifier
Figure 2. Typical single-frequency QTekLaser™ fiber laser.

Specifications

Download 1112 nm Fiber Laser Specifications
Parameter Value Unit
Laser Wavelength 1111.6 nm
Laser linewidth <10 kHz
Operation mode CW /
PZT SMA port 0 – 10 V
PZT SMA frequency tuning 0.93 GHz/V
PZT SMA modulation bandwidth 5 kHz
Thermal tuning range of seed 0.7 nm
Max output power 10 W
Input seed polarization Slow axis or key direction /
Output 1/e² beam diameter 2.1 mm
Beam quality (M2) 1.08 /
Relative Intensity Noise (RIN) for freq. >10 kHz <-130 dBc/Hz
Fiber length to chassis 2 m
Polarization direction Vertical /
Polarization Extinction Ratio (PER) >20 dB
Optical Signal-to-Noise Ratio (OSNR) 55 dB
Warm-up time 10 min
Oven operating temperature 15 – 63 °C
Electrical Max power consumption W
AC power supply voltage 110 V
Fuse 6.3 A, 250 VAC, 5 × 20 mm /
Remote interlock voltage 3.3 V
Cooling Chilled water /
Suggested chiller temperature 20 °C
Chilled water flow rate ≥0.65 GPM
Room temperature 17 – 25 °C
Room humidity 30 – 60 %
General Chassis 4U 19" Rack mount /
Weight Total system weight 25 (55) kg (lbs)
Class 4 Laser

QTekLaser™ lasers comply with Federal Regulations (21 CFR Subchapter J, Part 1040)  as administered by the Center for Devices and Radiological Health and are certified to IEC 60825-1:2014 standards.

It is the end user's responsibility to ensure that no significant light is retroreflected back into QTekLaser™ systems as this can degrade performance and potentially damage the lasers. To prevent this, the use of an external optical isolator is strongly recommended.  Damage due to retroreflected light is not covered under warranty.

Ordering Information

Part Number: QT-LASR-Yb-SHG-1111.6-10-W-2-2.0-1
Laser Type: Seed laser + Yb-doped fiber amp
Product Selection Guide

Performance

Laser Power vs. Current 

Laser Power vs. Current: 1112 nm
Figure 3. Laser Power vs. Current: 1112 nm

Beam Quality

Beam Quality: 1112 nm M2 1.08 horizontal, 0.96 vertical
Figure 4. Beam Quality: 1112 nm M2 1.08 horizontal, 0.96 vertical

Beam Profile

Beam Profile: 1112 nm 1/e2 diameter 2.1 mm horizontal, 2.2 mm vertical
Figure 5. Beam Profile: 1112 nm 1/e2 diameter 2.1 mm horizontal, 2.2 mm vertical

Relative Intensity Noise (RIN)

Relative Intensity Noise (RIN) for freq. >10 kHz: < -130 dBc/Hz
Figure 6. Relative Intensity Noise (RIN) for freq. >10 kHz:
<-130 dBc/Hz

Optical Spectrum

Optical Spectrum: 1112 nm OSNR 55 dB
Figure 7. Optical Spectrum: 1112 nm OSNR 55 dB

Mechanical Dimensions

1112 nm mechanical dimensions.
Figure 8. 1112 nm fiber laser mechanical dimensions.

Product Photos

1112 nm fiber laser
Figure 9. 1112 nm fiber laser, 4U chassis water cooled
Complete fiber laser system, 4U chassis back panel, water cooled
Figure 10. 1112 nm fiber laser 4U chassis back panel water cooled
© 2026 QTEK LASER, LLC
411 Waverley Oaks Road, Suite 111, Waltham, MA 02452 USA  
+1 781-373-1446
sales@qteklaser.com
Privacy Policy