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Related Experiment Video

Updated: Jul 3, 2026

Multimodal Volumetric Retinal Imaging by Oblique Scanning Laser Ophthalmoscopy (oSLO) and Optical Coherence Tomography (OCT)

Multimodal Volumetric Retinal Imaging by Oblique Scanning Laser Ophthalmoscopy (oSLO) and Optical Coherence Tomography (OCT)

Published on: August 4, 2018

Compact Er:Yb:glass-laser-based supercontinuum source for high-resolution optical coherence tomography.

M C Stumpf¹, S C Zeller, A Schlatter

¹Department of Physics, Institute of Quantum Electronics, ETH Zurich, 8093 Zurich, Switzerland. stumpf@phys.ethz.ch

|July 9, 2008

Summary

We developed a super-continuum light source using a diode-pumped laser, generating ultrashort pulses. This technology enables ultrahigh-resolution optical coherence tomography (OCT) with 3.5 micrometer axial resolution.

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20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

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Last Updated: Jul 3, 2026

Multimodal Volumetric Retinal Imaging by Oblique Scanning Laser Ophthalmoscopy (oSLO) and Optical Coherence Tomography (OCT)

Multimodal Volumetric Retinal Imaging by Oblique Scanning Laser Ophthalmoscopy (oSLO) and Optical Coherence Tomography (OCT)

Published on: August 4, 2018

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

Published on: July 12, 2017

Area of Science:

Photonics and Laser Technology
Optical Metrology

Background:

Super-continuum generation is crucial for broadband light sources.
Diode-pumped, passively mode-locked lasers offer compact and efficient pulse generation.
Achieving octave-spanning spectra is key for advanced optical applications.

Purpose of the Study:

To develop a low-coherence light source for ultrahigh-resolution optical coherence tomography (OCT).
To demonstrate super-continuum generation from a diode-pumped, passively mode-locked Er:Yb:glass laser.
To characterize the spectral broadening and coherence properties of the generated light.

Main Methods:

Direct super-continuum generation using a diode-pumped, passively mode-locked Er:Yb:glass laser.
Launching 198 fs transform-limited pulses into a dispersion-optimized highly nonlinear fiber.
Spectral broadening to achieve an optical bandwidth spanning 1150 nm to 2400 nm (more than one octave).

Main Results:

Generation of 198 fs transform-limited pulses with 100 mW average power at 75 MHz repetition rate.
Achieved an octave-spanning optical bandwidth from 1150 nm to 2400 nm.
Coherence measurements demonstrated potential for 3.5 micrometer axial resolution in air for OCT.

Conclusions:

The developed super-continuum light source provides a robust platform for ultrahigh-resolution OCT.
The broad spectral bandwidth and coherence properties are suitable for advanced imaging applications.
This work highlights the potential of integrated laser and nonlinear fiber systems for metrology.