770 nm Fiber Laser

Product Description

The QTekLaser™ 770 nm Fiber Laser is a high-performance source tailored for atomic physics and quantum research, particularly applications involving potassium transitions, laser cooling, and interferometry. Using advanced Second-Harmonic Generation (SHG), it delivers up to 2 W of narrow-linewidth, polarization-maintaining output at 770 nm. With a compact 3U, 19″ rack-mount chassis, robust beam quality, and an IoT-enabled control system, this laser combines scientific precision with industrial reliability for seamless laboratory integration.

Download 770 nm Fiber Laser Specifications

532 nm 14 W second-harmonic generation (SHG) fiber laser.

Figure 1. QTekLaser^TM 770 nm fiber laser.

Features

Output power 2 W
High reliability with all-fiber design
Narrow linewidth (<20 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
Research

Second-Harmonic Generation (SHG)

QTekLaser^TM offers laser systems with extended wavelength range by combining nonlinear frequency conversion technologies. Through second-harmonic generation (SHG) we achieve significant laser power at the visible and NIR regime (figure 2; red-shaded cells of table 1). With the development of waveguide technology, nonlinear frequency conversion has become a powerful tool to extend the application scope of fiber lasers.

Wavelength extension of QTekLaser products via nonlinear frequency conversion. The red-shaded cells represent SHG and blue-shaded cells SFG.

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).

Figure 2. QTekLaser^TM fiber laser system with an integrated frequency doubler.

Specifications

Download 770 nm Fiber Laser Specifications

Wavelength	770 nm
Output power	2 W
Polarization Extinction Ratio (PER)	17 dB
Power stability	<1%
Laser linewidth	<20 kHz
Operating temperature	17-25 °C
Cooling mode	Air or Water cooling
Beam quality	TEM00, M² ~1.0
Output mode	PM780-HP with FC/APC connector
Side-Mode Supression Ratio (SMSR)	70 dB
Chassis	3U 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

Part Number: QT-LASR-SHG-770-2-A-2-2-0

Laser Type: Seed laser + Er-doped fiber amp + SHG

Product Selection Guide

Performance

Beam Profile

Figure 3. Beam Profile 770 nm. The beam is collimated with a Thorlabs F220APC-780 collimator, not included. It exhibits an excellent, round Gaussian profile with a 1/e² beam diameter of 1.9 mm.