| Author(s): |
Ian R. Coddington; William C. Swann; Nathan R. Newbury; |
| Title: |
Time-domain spectroscopy of the optical free-induction decay from vibrating molecules |
| Published: |
April 26, 2010 |
| Abstract: |
Time-domain spectroscopy using dual, coherent frequency combs is used to measure free-induction decay from a molecular gas sample in the near-IR with a time-domain signal-to-noise ratio of ~106 over a ~6 ns window at 55 fs time resolution (corresponding to the 9 THz source bandwidth) and a frequency/timing accuracy set by the frequency combs. The free-induction decay exhibits the expected periodic pulses from the rephasing of the multiply excited rovibrational levels. This demonstration represents the first high-resolution, high-accuracy, broadband measurement of optical free-induction decay, to our knowledge. |
| Citation: |
Optics Letters |
| Volume: |
35 |
| Issue: |
9 |
| Pages: |
pp. 1395 - 1397 |
| Keywords: |
frequency comb; optical free induction decay; spectroscopy |
| Research Areas: |
Optical Metrology, Instrumentation, Remote Sensing, Laser Physics |
| PDF version: |
 Click here to retrieve PDF version of paper (247KB) |
