Laser Wavelength Measurement Based on a Digital Micromirror Device

Laser Wavelength Measurement Based on a Digital Micromirror Device

We constructed a relatively simple inexpensive wavemeter with completely static parts to measure the laser wavelength accurately based on diffraction from a Fresnel zone plate (FZP) displayed on a digital micromirror device. The unknown laser wavelength was measured by finding the proper FZP, focusi...

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Veröffentlicht in:IEEE photonics technology letters 2018-07, Vol.30 (13), p.1186-1189
Hauptverfasser: Mohagheghian, Maryam, Ghavami Sabouri, Saeed
Format: Artikel
Sprache:eng
Schlagworte:
Charge coupled devices
Digital micromirror devices
Laser beams
Measurement by laser beam
Micromirrors
optical diffraction
Optical interferometry
Optical sensors
Wavelength measurement
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Zusammenfassung:We constructed a relatively simple inexpensive wavemeter with completely static parts to measure the laser wavelength accurately based on diffraction from a Fresnel zone plate (FZP) displayed on a digital micromirror device. The unknown laser wavelength was measured by finding the proper FZP, focusing the laser beam exactly into the specified focal point. The relative uncertainty in the order of 10 -5 was attained in He:Ne and second harmonic of Nd:YAG laser wavelength measurement.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2018.2838262