Testing ultrafast mode-locking at microhertz relative optical linewidth.
نویسندگان
چکیده
We report new limits on the phase coherence of the ultrafast mode-locking process in an octave-spanning Ti:sapphire comb.We find that the mode-locking mechanism correlates optical phase across a full optical octave with less than 2.5 microHZ relative linewidth. This result is at least two orders of magnitude below recent predictions for quantum-limited individual comb-mode linewidths, verifying that the mode-locking mechanism strongly correlates quantum noise across the comb spectrum.
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1.0 INTRODUCTION 2. 0 MODULATOR CONFIGURATION AND CHARACTERISTICS 3. 0 LOW PRESSURE CW C02 LASER EXPERIMENTS 4. 0 MODE-LOCKING THE C02 TEA LASER 4. I Linewidth of CO TEA Lasers 4. 2 Experimental Configuration and Initial Experiments 4. 3 Measurements of the Optical Quality of the Laser Medium 4. 4 Modifications of the Discharge Configuration to Improve Medium Optical Quality 4. 5 Phase-Locking ...
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ورودعنوان ژورنال:
- Optics express
دوره 17 2 شماره
صفحات -
تاریخ انتشار 2009