Pulsed multicolor digital holography using hydrogen Raman shifter

Authors

Percival F. Almoro ⋅ PH National Institute of Physics, University of the Philippines Diliman
Marilou M. Cadatal ⋅ PH National Institute of Physics, University of the Philippines Diliman
Fema A. Daquiado ⋅ PH National Institute of Physics, University of the Philippines Diliman
Wilson O. Garcia ⋅ PH National Institute of Physics, University of the Philippines Diliman
Caesar A. Saloma ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

For the first time, a hydrogen Raman shifter is used as a light source for pulsed multicolor digital holography. To generate a pulsed white light laser source, the Raman shifter (200 psi) is pumped by a 355 nm Nd:YAG pulsed laser. The multiple wavelength Raman output beam is initially dispersed by a prism and the Stokes lines: 415.9nm (blue), 502.9nm (green), and 635.9nm (red), are selected. Each of the RGB lines is passed through a beam conditioning system to improve beam quality and to equalize the RGB intensities. The RGB lines are then recombined to become the new nanosecond holographic white light source. As a demonstration of the technique, a negative resolution target with color filters is illuminated by the Raman shifter. Three holograms generated by the RGB lines are recorded on a charge-coupled device (CCD) camera, reconstructed in the computer and unified to achieve full-color final image.

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Published

2003-10-22

Issue

2003: Proceedings of the 21st Samahang Pisika ng Pilipinas Physics Congress

Section

Optics and Photonics

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How to Cite

[1]

“Pulsed multicolor digital holography using hydrogen Raman shifter”, Proc. SPP, vol. 21, no. 1, pp. SPP–2003, Oct. 2003, Accessed: Apr. 30, 2026. [Online]. Available: https://proceedings.spp-online.org/article/view/SPP-2003-3C-02