1064 nm Fiber Laser

Single Frequency

QTekLaser^TM amplifiers work with various kinds of seed lasers. They can be economic 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.

Specifications

Wavelength	1064 nm
Output power	1-50 W
Polarization Extinction Ratio (PER)	30 dB
Power stability	<1%
Laser linewidth	<20 kHz
Operating temperature	17-25 °C
Wavelength tuning range	>20 pm
Cooling mode	Water cooling
Beam quality	TEM00, M2<1.05
Output mode	Free space, collimated with ~2 mm 1/e² diameterr
Relative Intensity Noise (RIN)	-135 dBc/Hz >10kHz
Side-Mode Supression Ratio (SMSR)	59 dB
Laser Head Size	12"x9"x3.714"
Chassis	4U 19" Rack mount

QTekLaser^TM 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^TM 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

Performance

Power Stability

Figure 3. Power Stability: 1064 nm @50 W, <1%

Beam Quality

Figure 4. Beam Quality: 1064 nm M² <1.05

Beam Profile

Figure 5. Beam Profile: 1064 nm 1/e² diameter 0.9 mm

Relative Intensity Noise (RIN)

Figure 6. Relative Intensity Noise (RIN): 1064 nm <-140 dBc/Hz >10kHz

Optical Spectrum

Figure 7. Optical Spectrum: 1064 nm SMSR 59 dB

Laser Power vs. Current 

Figure 8. Laser Power vs. Current: 1064 nm 

Cold Start Power

Figure 9. Cold Start Power: 1064 nm

Quantum Applications

Trapping, Cooling & Qubit Control

The ultra-stable, narrow-linewidth output of the 1064 nm fiber laser (≤ 20 kHz) makes it well suited for optical trapping and cooling of neutral atoms or ions. In optical dipole traps, far-off-resonant lasers (such as 1064 nm for certain atomic species) create conservative potentials that confine atoms with minimal photon scattering, enabling long coherence times. The low relative intensity noise (<-140dBc/Hz >10kHz) and high beam quality (M² < 1.05) ensure very stable trapping potentials, which is critical to suppress heating and decoherence. Moreover, the high power (up to 50 W) is useful for creating deep potentials and for multiplexed or large-volume traps in quantum gas or quantum computing setups.

The same laser can be employed for qubit control via Raman transitions, stimulated two-photon processes, or state-dependent forces. For example, in atomic qubit architectures (e.g. alkali or alkaline-earth atoms), two-photon Raman coupling often uses detuned laser fields to address ground-state hyperfine transitions. The narrow linewidth and good frequency stability of this fiber laser help suppress off-resonant scattering and phase noise, improving gate fidelity. The polarization-maintaining(PM) output is also beneficial where polarization control is critical for selection rules in state coupling.

Entanglement, Coherence & Scalability

Beyond simple trapping and control, the 1064 nm fiber laser can support protocols for entangling qubits—either via mediated interactions or via motional coupling. High-power, low-noise beams can generate optical potentials that bring qubits into strong interactions (e.g. via controlled collisions, Rydberg-state interactions, or motional gates). The laser’s stability in amplitude, polarization, and pointing reduces decoherence channels during entangling operations.

Additionally, as quantum computing systems scale, multiplexed beam delivery becomes important (e.g. many traps addressed in parallel, optical lattices, cross-beam interrogation). A fiber-based design with polarization-maintaining architecture simplifies beam routing, splitting, and delivery to multiple zones or optical setups. It also reduces susceptibility to environmental drifts or mode distortions. In sum, ahigh-performance 1064 nm fiber laser can serve as a backbone resource in quantum computing platforms, enabling stable trapping, coherent control, and high-fidelity entangling operations.

Mechanical Dimensions

Product Photos

Figure 11. 1064 nm fiber laser 4U chassis water cooled

Figure 12. 1064 nm fiber laser 4U chassis back panel water cooled