Fully programmable two-dimensional pulse shaper for broadband line-by-line amplitude and phase control
Journal article, 2013

We introduce a fully programmable two-dimensional (2D) pulse shaper, able to simultaneously control the amplitude and phase of very fine spectral components over a broad bandwidth. This is achieved by aligning two types of spectral dispersers in a cross dispersion setup: a virtually imaged phased array for accessing fine resolution and a transmission grating for achieving broad bandwidth. We take advantage of the resultant 2D dispersion profile as well as introduce programmability by adding a 2D liquid crystal on silicon spatial light modulator at the masking plane. Our shaper has a resolution of ~3 GHz operating over the entire 'C' band of >5.8 THz. Experimental evidence is provided that highlights the full programmability, fine spectral control, and broad bandwidth operation (limited currently by the bandwidth of the input light). We also show lineby- line manipulation of record 836 comb lines over the C-band. © 2013 Optical Society of America.


A.J. Metcalf

Purdue University

Victor Torres Company

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

V.R. Supradeepa

OFS Laboratories

Purdue University

D.E. Leaird

Purdue University

A.M. Weiner

Purdue University

Optics Express

1094-4087 (ISSN) 10944087 (eISSN)

Vol. 21 23 28029-28039

Areas of Advance

Information and Communication Technology

Subject Categories


Atom and Molecular Physics and Optics



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