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Related Experiment Video

Updated: Feb 14, 2026

Fabrication of Zero Mode Waveguides for High Concentration Single Molecule Microscopy

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Published on: May 12, 2020

Efficient resonantly-clad-pumped laser based on a Er:YAG-core planar waveguide.

V Fromzel, N Ter-Gabrielyan, M Dubinskii

|February 25, 2018

Summary

We achieved 75 W of continuous wave power from an in-band pumped Erbium-doped Yttrium Aluminum Garnet (Er:YAG) planar waveguide laser. This laser system demonstrated a high slope efficiency of 64% at 1645 nm.

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Area of Science:

Optics and Photonics
Laser Physics
Materials Science

Background:

Erbium-doped Yttrium Aluminum Garnet (Er:YAG) lasers are crucial for various applications, including mid-infrared spectroscopy and medical treatments.
Planar waveguide lasers offer advantages in beam quality and thermal management compared to bulk lasers.
In-band pumping strategies can improve laser efficiency by reducing thermal loading and optimizing energy transfer.

Purpose of the Study:

To demonstrate continuous wave (CW) operation of an in-band pumped Er:YAG planar waveguide laser.
To achieve high output power and efficiency using this laser architecture.
To investigate the performance characteristics of Er:YAG planar waveguides for laser applications.

Main Methods:

Fabrication of an Er:YAG planar waveguide.
In-band pumping of the waveguide laser at 1532 nm using a fiber-coupled laser diode.
Characterization of the laser output power and slope efficiency at 1645 nm.

Main Results:

Continuous wave (CW) laser operation was successfully demonstrated.
A maximum output power of 75 W was achieved at a wavelength of 1645 nm.
A high slope efficiency of 64% with respect to absorbed pump power was measured.

Conclusions:

The in-band pumped Er:YAG planar waveguide laser is a highly efficient source for 1645 nm emission.
This laser architecture shows significant potential for high-power laser generation.
The results pave the way for advanced laser systems in spectroscopy and other fields.