Abstract
The authors have succeeded in injection seeding a single pulsed optical parametric oscillator at two separate optical frequencies that fall within its intrinsically broad optical bandwidth, using a pair of external-cavity diode lasers. This OPO-based strategy enables single-shot, two-color multiplex coherent anti-Stokes Raman spectroscopy measurements that can be used for combustion diagnostics. Another form of multiplex OPO CARS employs a free-running OPO (with no form of wavelength control other than the phase matching condition) to generate broadband Stokes radiation for broadband multiplex CARS measurements. In both of these methods, the dispersed CARS spectrum is detected by a grating spectrometer and gated photodiode array. The relative advantage of two-color OPO CARS is that all the Stokes radiation is concentrated into two separate channels that are specifically tuned to spectroscopic features of interest, while the continuous spectral distribution of Stokes radiation employed in broadband CARS is spread non-selectively over the entire Raman spectrum.
Original language | English |
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Title of host publication | Conference on Lasers and Electro-Optics Europe - Technical Digest |
Editors | Anon |
Place of Publication | Piscataway, NJ |
Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
Pages | 154-154 |
Number of pages | 1 |
ISBN (Print) | 0780331699 |
DOIs | |
Publication status | Published - 1996 |
Event | Proceedings of the 1996 Conference on Lasers and Electro-Optics Europe, CLEO/Europe - Hamburg, Ger Duration: 8 Sept 1996 → 13 Sept 1996 |
Other
Other | Proceedings of the 1996 Conference on Lasers and Electro-Optics Europe, CLEO/Europe |
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City | Hamburg, Ger |
Period | 8/09/96 → 13/09/96 |