Dual-wavelength digital holography with a low-coherence light source based on a quantum dot film

Jae Yong Lee, Sungbin Jeon, Jin Sang Lim, Se Hwan Jang, No Cheol Park, Young Joo Kim

Research output: Contribution to journalArticle

2 Citations (Scopus)


This Letter proposes a dual-wavelength, low-coherence digital holography system with a single light source, which utilizes a quantum dot (QD) film as a wavelength converter. By changing the size of the QDs, the proposed method easily yields higher and more uniform illumination of any target wavelength, compared with bandpass-filtered light-emitting diodes. Fabrication parameters of the QD film for better conversion efficiency are discussed. Using this light source with the dual-wavelength reconstruction method extends the efficiency and range of nanoscale three-dimensional height measurements.

Original languageEnglish
Pages (from-to)5082-5085
Number of pages4
JournalOptics Letters
Issue number24
Publication statusPublished - 2017 Dec 15


All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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