1560 nm fiber laser

Features

High reliability with all fiber design
SBS free
Low noise
High output power (20 W)
High PER
Low thermal lensing
Excellent beam quality
Laser linewidth <10 kHz
Excellent power stability <1%
User-friendly interface via IoT technology
3U 19" Rack mount
Certified to IEC 60825-1:2014 safety standards

Applications

Quantum computing
Quantum sensing
Atomic interferometry
Laser cooling and trapping
Frequency doubling or mixing
Research

Single Frequency

QTekLaser™ 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 1.

Diagram of a typical QTekLaser laser system. Seed laser and multi-stage amplifier

Figure 1. Typical single-frequency QTekLaser™ fiber laser.

Specifications

Download 1560 nm Fiber Laser Specifications

1560 nm Fiber Laser — Specifications

	Parameter	Value	Unit
Laser	Wavelength range	1545-1565	nm
	Operation mode	CW	/
	Max output power	20@1555	W/nm
	Laser linewidth	<10	kHz
	Output type	Fiber to free space collimator
	Output beam diameter (1/e²)	2	mm
	Beam quality	<1.1	M²
	Beam divergence angle	1.1	mrad
	Output isolation	>30	dB
	Polarization direction	Horizontal	/
	Polarization extinction ratio	>23	dB
	Relative intensity noise (RIN) for freq. >10 kHz	<-140	dBc/Hz
Electrical	Remote interlock voltage	3.3	V
	Max power consumption	364	W
	AC power supply voltage	110	V
	Fuse	6 A, 250 VAC, 5×20 mm	/
General	Amplifier operation temperature	15 – 32	°C
	Cooling	Water Cooling	/
	Chassis operation temperature	15 – 40	°C
	Room temperature	15 – 23	°C
	Room humidity	30 – 50	%
	Warm-up time	~30	min
	Weight	39	lbs
	Dimension	3U + laser head	/
	Communication Interface	IoT, TCP	/

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-SF-LASR-1560-20-2-2-1

Laser Type: seed laser + Er-doped fiber amp

Performance

Laser Power vs. Wavelength

Figure 2. Laser power vs. wavelength with laser current set to 4.1 A. Chiller set point 19 °C.

Relative Intensity Noise (RIN)

Figure 3. Relative intensity noise (RIN). <-140 dBc/Hz for frequencies >10 kHz.

1560 nm Optical Spectrum

Figure 4. Optical spectrum at different wavelengths.

Power vs. Current 1555 nm

Figure 5. Output power vs current at 1555 nm with chiller temperature set at 19.6 °C.

Power vs. Current 1560 nm

Figure 6. Output power vs. current at 1560 nm with chiller temperature set at19.6 °C.

Power Stability

Figure 7. Power stability.

Beam Profile

Figure 8. Beam profile.

Beam Quality

Figure 9. Beam quality: M² <1.1.

Quantum Applications

The 1560 nm single-frequency fiber laser pairs 20 W of power with very low noise in the telecom band. It is widely used for quantum sensing, atomic interferometry, and laser cooling and trapping, and is an excellent fundamental for frequency doubling to 780 nm for rubidium experiments.

Mechanical Dimensions

Figure 10. 1560 nm fiber laser mechanical dimensions.