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Updated: May 29, 2026

Patterned Photostimulation with Digital Micromirror Devices to Investigate Dendritic Integration Across Branch Points
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Published on: March 2, 2011

Compact single mode tunable laser using a digital micromirror device.

Frank Havermeyer1, Lawrence Ho, Christophe Moser

  • 1Ondax Inc, 850 E Duarte Road, Monrovia, CA 91016, USA.

Optics Express
|September 22, 2011
PubMed
Summary
This summary is machine-generated.

A compact tunable laser using volume holographic gratings and a micromirror achieves single-mode, multi-color operation. This laser offers fast switching and a narrow linewidth, suitable for advanced applications.

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Area of Science:

  • Photonics and Laser Technology
  • Optical Engineering
  • Holography

Background:

  • External cavity lasers are crucial for tunable wavelength applications.
  • Volume holographic gratings offer high spectral resolution and efficiency.
  • Micromirror devices enable dynamic control in optical systems.

Purpose of the Study:

  • To report the wavelength tuning properties of a novel tunable external cavity laser.
  • To investigate the performance of a laser integrating multiplexed volume holographic gratings and a commercial micromirror device.
  • To assess the suitability of this laser for advanced applications like Terahertz generation and metrology.

Main Methods:

  • Fabrication of a compact 3x3x3 cm³ external cavity laser.
  • Integration of multiplexed volume holographic gratings for wavelength selection.
  • Utilizing a commercial micromirror device for dynamic wavelength switching.
  • Characterization of laser output including wavelength range, linewidth, output power, and switching speed.

Main Results:

  • Achieved single-mode operation across a wavelength range of 776 nm to 783 nm.
  • Demonstrated output power of 37 mW with a linewidth less than 7.5 MHz.
  • Observed a 50 μs rise/fall time constant and a maximum switching rate of 0.66 KHz per wavelength.
  • Confirmed single or multi-color output capabilities.

Conclusions:

  • The developed tunable laser exhibits excellent performance characteristics, including a wide tuning range and narrow linewidth.
  • Its discrete wavelength-switching capability makes it a promising source for continuous wave Terahertz generation.
  • The laser's features are well-suited for applications in three-dimensional metrology.