Abstract
We experimentally demonstrate a compact optical spectrometer with a resolution of up to ∼ 0.1 nm suitable for spectral line measurements of laser diodes. This spectrometer is based on a transmission, 4-mm in diameter, and 0.14-NA off-axis binary resonance domain diffractive lens with strong lateral and longitudinal chromatic dispersion. After calibration with a mercury-argon source and a helium-neon laser, we measured the spectrum of RGB laser diodes. The results confirm the theoretical resolution and are in good match to data from optical spectrum analyzer with 0.05-nm resolution.
| Original language | English |
|---|---|
| Article number | 7329940 |
| Pages (from-to) | 577-580 |
| Number of pages | 4 |
| Journal | IEEE Photonics Technology Letters |
| Volume | 28 |
| Issue number | 5 |
| DOIs | |
| State | Published - 1 Mar 2016 |
Keywords
- Bragg gratings
- diffractive lens
- holography
- spectroscopy