Title :
Mid-infrared frequency synthesizers: novel precise rulers for molecular spectroscopy
Author :
Maddaloni, P. ; Gagliardi, G. ; Malara, P. ; De Natale, P.
Author_Institution :
Ist. Naz. di Ottica Applicata, Pozzuoli
Abstract :
In this work, we demonstrate a mid-IR frequency comb based on a difference-frequency-generation (DFG) process, which takes place in a periodically-poled lithium niobate (PPLN) crystal between a continuous-wave (CW) laser source and a near-IR, fiber-based optical frequency synthesizers (OFS). Then, in order to demonstrate that the generated comb can be properly used as a direct frequency ruler, an external CW DFG source is phase-locked to the closest mid-IR comb tooth and used for high-precision molecular spectroscopy.
Keywords :
infrared spectroscopy; laser mode locking; lithium compounds; measurement by laser beam; optical harmonic generation; spectroscopic light sources; CW DFG source; LiNbO3; PPLN crystal; continuous-wave laser source; difference-frequency-generation; direct frequency ruler; fiber-based optical frequency synthesizers; frequency comb; high-precision molecular spectroscopy; laser phase-locking; mid-infrared frequency synthesizers; periodically-poled lithium niobate; Fiber lasers; Fiber nonlinear optics; Frequency measurement; Frequency synthesizers; Laser tuning; Optical fiber polarization; Optical pumping; Pump lasers; Quantum cascade lasers; Spectroscopy;
Conference_Titel :
Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-0930-3
Electronic_ISBN :
978-1-4244-0931-0
DOI :
10.1109/CLEOE-IQEC.2007.4387054
