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- Title
Dual-wavelength monolithic Y-branch distributed Bragg reflection diode laser at 671 nm suitable for shifted excitation Raman difference spectroscopy.
- Authors
Maiwald, Martin; Fricke, Jörg; Ginolas, Arnim; Pohl, Johannes; Sumpf, Bernd; Erbert, Götz; Tränkle, Günther
- Abstract
A dual-wavelength monolithic Y-branch distributed Bragg reflection (DBR) diode laser at 671 nm is presented. The device is realized with deeply etched surface DBR gratings by one-step epitaxy. A maximum optical output power of 110 mW is obtained in cw-operation for each laser cavity. The emission wavelengths of the device are 670.5 nm and 671.0 nm with a spectral width of 13 pm (0.3 cm−1) and a mean spectral distance of 0.46 nm (10.2 cm−1) over the whole operating range. Together with a free running power stability of ± 1.1% this most compact diode laser is ideally suited as an excitation light source for portable shifted excitation Raman difference spectroscopy (SERDS).
- Subjects
WAVELENGTHS; SEMICONDUCTOR lasers; RAMAN spectroscopy; MONOLITHIC microwave integrated circuit amplifiers; LIGHT sources; LASER cavity resonators
- Publication
Laser & Photonics Reviews, 2013, Vol 7, Issue 4, pL30
- ISSN
1863-8880
- Publication type
Article
- DOI
10.1002/lpor.201300041