Abstract
Frequency stabilization of mid-IR quantum cascade (QC) lasers to the kilohertz level has been accomplished by use of electronic servo techniques. With this active feedback, an 8.5-μm QC distributed-feedback laser is locked to the side of a rovibrational resonance of nitrous oxide (N2O) at 1176.61 cm-1. A stabilized frequency-noise spectral density of 42 Hz/√Hz has been measured at 100 kHz; the calculated laser linewidth is 12 kHz.
Original language | English (US) |
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Pages (from-to) | 1844-1846 |
Number of pages | 3 |
Journal | Optics Letters |
Volume | 24 |
Issue number | 24 |
DOIs | |
State | Published - Dec 15 1999 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics