| Autor: |
Wen-Ping Deng, C.-F. Cheng, Shui-Ming Hu, Guo-Sheng Cheng, B. Gao, Qingshi Zhu |
| Rok vydání: |
2009 |
| Předmět: |
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| Zdroj: |
The Review of scientific instruments. 79(12) |
| ISSN: |
1089-7623 |
| Popis: |
A midinfrared laser spectrometer is built up based on the difference frequency generation (DFG) of a Nd:YAG (yttrium aluminum garnet) laser and a tunable Ti:sapphire (Ti:Sa) laser. Tuning the Ti:Sa laser and operating properly with the periodically poled lithium niobate crystal, the DFG emission is tunable in the spectral range of 2.3-5.0 microm. The 1064 nm Nd:YAG laser frequency is stabilized to the 10(-6) cm(-1) level on a Doppler-broadened I(2) absorption line at 532 nm. As a result, the DFG emission frequency is stabilized within 1x10(-4) cm(-1). The measurement of an absorption line of CH(4) near 3 mum demonstrates that the DFG spectrometer is very suitable for the molecular absorption line profile studies in the midinfrared region. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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