High-precision 3D surface topography measurement using high-stable multi-wavelength digital holography referenced by an optical frequency comb | Zendy

Dahi Ghareab Abdelsalam Ibrahim | Zendy; Takeshi Yasui | Zendy

Open Access

High-precision 3D surface topography measurement using high-stable multi-wavelength digital holography referenced by an optical frequency comb

Author(s) -

Dahi Ghareab Abdelsalam Ibrahim,

Takeshi Yasui

Publication year - 2018

Publication title -

optics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.524

H-Index - 272

eISSN - 1071-2763

pISSN - 0146-9592

DOI - 10.1364/ol.43.001758

Subject(s) - optics , materials science , beat (acoustics) , laser , wavelength , holography , digital holography , frequency comb , optical fiber , signal (programming language) , fiber laser , optoelectronics , physics , computer science , programming language

High-stable, two-wavelength, digital holography referenced by an optical frequency comb is presented. The technique is demonstrated by using optical waves from an external cavity laser diode phase-locked to a mode-locked Er-doped fiber comb laser light. The mixed beat signal is stabilized at 30 MHz by a sensitive proportional integral derivative controller. The tunable continuous-waves stabilized with frequency uncertainty of 5×10 -11 are employed to investigate large stepped structures.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research