619 nm Fiber Laser 

Product Description

The QTekLaserTM 619 nm fiber laser utilizes sum-frequency generation (SFG) to privide up to 100 mW of power. An integrated smart internet-of-things (IoT)-based control system enhances the user-friendly interface. The system is packaged in a typical industrial 19" 3U rack-mountable air-cooled chassis.

Product Selection Guide
619 nm 100 mW SFG Fiber Laser
Figure 1. QTekLaserTM 619 nm fiber laser

Features

  • 619 nm
  • 100 mW
  •  High reliability with FC/APC output connector
  •  Narrow linewidth (<200 kHz)
  •  Excellent power stability
  •  User-friendly interface via IoT technology
  • 3U 19" Rack mount with forced-air cooling
  • Certified to IEC 60825-1:2014 safety standards

Applications

  • Laser cooling and trapping 
  • Quantum computing
  • Quantum networking
  • PIC validation
  • Spectroscopy

Sum-Frequency Generation (SFG)

The wavelength range of QTekLaserTM products can be further extended using the nonlinear process of sum-frequency generation (SFG). This architecture is illustrated in figure 2. The two fundamental lasers are usually made of different gain fiber amplifiers. The extended wavelength values are summarized in the blue-shaded cells of table 1. This method achieves high power at certain wavelengths.

Diagram of a QTekLaser laser system with a frequency sum mixer integrated.
Figure 2. QTekLaserTM sum-frequency generation (SFG) fiber laser system. The frequency sum mixer is integrated into the product.
Table 1. Wavelength extension of QTekLaser products via nonlinear frequency conversion.
Table 1. Wavelength extension of QTekLaserTM products via nonlinear frequency conversion. The red-shaded cells represent second-harmonic generation (SHG) and the blue-shaded cells sum-frequency generation (SFG).
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Specifications

Wavelength619 nm
Output power1-100 mW
Operation ModeCW
Polarization Extinction Ratio (PER)18 dB
Polarization directionSlow axis
Power stability<1%
Laser linewidth<200 kHz
Frequency modulation (FM) gain500 (-323) uA/V (MHz/V)
FM bandwidthDC-10 MHz
FM input impedance50 Ohm
FM input range+/- 1.3 V
Operating temperature16-24 °C
Cooling modeAir cooling
Beam qualityTEM00, M2~1.0
Output fiber typePM630
Output fiber connectorFC/APC
Output fiber length2 m
Relative Intensity Noise (RIN)-125 dBc/Hz >10kHz
Side-Mode Supression Ratio (SMSR)58 dB
Chassis3U 19" Rack mount
Class 4 Laser

QTekLaserTM 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 QTekLaserTM 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-SFG-619-0.1-A-2-2.0-0
Laser Type: Seed lasers + YDFA+EDFA + SFG
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Performance

It is the end user's responsibility to ensure that no significant light is retroreflected back into QTekLaserTM 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.

Beam Profile

619 nm beam profile
Figure 3. Beam Profile 619 nm

Optical Spectrum

619 nm optical spectrum, smsr 59 dB
Figure 4. Optical Spectrum 619 nm SMSR 59 dB

Relative Intensity Noise (RIN)

619 nm Relative Intensity Noise (RIN)-125 dBc/Hz >10kHz
Figure 5. Relative Intensity Noise (RIN) 619 nm -125 dBc/Hz >10kHz

Laser Power vs. Current

619 nm Laser Power vs. Current
Figure 6. Laser Power vs. Current 619 nm

Tunability
Frequency vs. Seed Laser Temp.

619 nm Tunability, Frequency vs. Seed Laser Temp.
Figure 7. Tunability: Frequency vs. Seed Laser Temp. 619 nm fiber laser

Tunability
Wavelength vs. Seed Laser Temp.

619 nm Tunability, Wavelength vs. Seed Laser Temp.
Figure 8. Tunability: Wavelength vs. Seed Laser Temp. 619 nm

Tunability
Frequency vs. Seed Laser Current

619 nm Tunability, Frequency vs. Seed Laser Current
Figure 9. Tunability: Frequency vs. Seed Laser Current 619 nm

Tunability
Wavelength vs. Seed Laser Current

619 nm Tunability, Wavelength vs. Seed Laser Current
Figure 10. Tunability: Wavelength vs. Seed Laser Current 619 nm

Optimal SFG temperature vs. Wavelength

619 nm Optimal SFG temperature vs. Wavelength
Figure 11. Optimal SFG temperature vs. Wavelength 619 nm

Frequency Modulation via the SMA port

619 nm frequency modulation via the SMA port
Figure 12. Frequency Modulation via the SMA port 619 nm

Mechanical Dimensions

619 nm fiber laser mechanical dimensions
Figure 13. 619 nm fiber laser mechanical dimensions. 3U extended chassis.
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411 Waverley Oaks Road, Suite 114, Waltham, MA 02452 USA | +1 781-373-1446 | sales@qteklaser.com