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A constant output monochromator.

G B Maxwell¹, D D Doonan

¹Bausch & Lomb, Inc., Rochester, New York 14602, USA.

|January 14, 2010

Summary

This summary is machine-generated.

A new constant output monochromator delivers stable 100 µW power across a broad 375–1400 nm wavelength range. This advancement in optical instrumentation utilizes source intensity and transmission control for precise spectral output regulation.

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Area of Science:

Optical Engineering
Spectroscopy
Instrumentation Science

Background:

Precise control over light source intensity and spectral output is crucial for various scientific applications.
Existing monochromator systems may lack stability or a broad wavelength coverage.
The need for reliable, calibrated optical power sources is persistent in research and development.

Purpose of the Study:

To develop and characterize a novel monochromator system capable of maintaining a constant optical power output.
To achieve stable power delivery over an extended spectral range.
To implement a calibration method for the developed instrument.

Main Methods:

Design and construction of a constant output monochromator.
Implementation of feedback control for source intensity and monochromator transmission.
Integration of a thermopile detector for output calibration.
Characterization of power stability and spectral bandpass.

Main Results:

The developed monochromator provides a constant output power of 100 ± 2 microwatts.
Stable power output is maintained across a wide wavelength range from 375 nm to 1400 nm.
A spectral bandpass of 20 nm was achieved.
The integrated thermopile allows for accurate calibration of the open-loop system.

Conclusions:

A robust and stable constant output monochromator has been successfully developed.
The instrument offers significant advantages for applications requiring precise and stable illumination.
The calibration method ensures the reliability of the output power measurements.