Sum-Frequency Generation (SFG) Fiber Lasers

Low Noise, Narrow Linewidth, Polarization Maintaining (PM)

Product Description

QTekLaser^TM products with model No. QT-LASR-SFG-xxx-x-x are a series of fiber-laser products using sum-frequency generation (SFG), providing directly collimated narrow-linewidth laser sources at wavelengths ranging from 609 to 706 nm and 822 to 900 nm and power levels up to 20 W. An integrated smart internet-of-things (IoT)-based control system enhances the user-friendly interface. The system is packaged in a typical industrial 19" 3 or 4U rack-mountable chassis.

Product Selection Guide 619 nm 100 mW SFG Fiber Laser

Complete fiber-laser system using sum frequency generation (SFG)

Features

609-706 nm; 822-900 nm
High output power (up to 20 W)
High reliability with free space output
Narrow linewidth (<20 kHz)
Excellent power stability
User-friendly interface via IoT technology
3 or 4U 19" Rack mount
Certified to IEC 60825-1:2014 safety standards

Applications

Laser cooling and trapping
Quantum computing
Quantum networking
PIC validation

Sum-Frequency Generation (SFG)

The wavelength range of QTekLaser^TM products can be further extended using the nonlinear process of sum-frequency generation (SFG). This architecture is illustrated in figure 1. 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 1. QTekLaser^TM 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 QTekLaser^TM products via nonlinear frequency conversion. The red-shaded cells represent second-harmonic generation (SHG) and the blue-shaded cells sum-frequency generation (SFG).

Product Selection Guide

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.

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.