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Updated: May 29, 2026

Implementation of a Nonlinear Microscope Based on Stimulated Raman Scattering

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Published on: July 6, 2019

Serial time-encoded amplified microscopy (STEAM) based on a stabilized picosecond supercontinuum source.

Chi Zhang¹, Yi Qiu, Rui Zhu

¹Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong.

|September 22, 2011

Summary

Researchers developed a method to stabilize picosecond supercontinuum (SC) sources, enabling high-performance serial time-encoded amplified microscopy (STEAM) imaging. This breakthrough extends SC applicability to picosecond and nanosecond regimes, improving image quality.

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Last Updated: May 29, 2026

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Area of Science:

Optics and Photonics
Microscopy Technology

Background:

Temporal stability of broadband sources like supercontinuum (SC) is crucial for ultrafast serial time-encoded amplified microscopy (STEAM).
Previously, only femtosecond SC sources with better temporal stability were used in STEAM due to fluctuations in longer-pulse SC generation.

Purpose of the Study:

To develop a simple approach for active control of picosecond SC stability.
To extend the application of SC in STEAM to picosecond and nanosecond regimes.

Main Methods:

Utilized a continuous-wave (CW)-triggered picosecond SC source.
Implemented active control for picosecond SC stability.

Main Results:

Demonstrated stable single-shot STEAM imaging at a 4.9 MHz frame rate.
Showcased significant reduction in shot-to-shot fluctuation using CW-stabilized SC.
Improved STEAM image quality.

Conclusions:

The developed method enables active control of picosecond SC stability.
This advancement broadens the utility of SC in STEAM imaging beyond femtosecond pulses.
Achieved high-speed, high-quality imaging using stabilized picosecond SC sources.