Nanosecond, pulsed, frequency-modulated optical parametric oscillator
For certain applications, a spectrum comprised of several longitudinal modes from a laser or optical parametric oscillator (OPO) is desirable. For example, a broad spectrum can reduce speckle in remote sensing. One way to achieve this is to allow an OPO to operate on several modes that evolve from quantum noise. Unfortunately, in this case, the spectrum fluctuates from pulse to pulse and can be a noise source. An alternative is to seed the OPO on several longitudinal modes simultaneously so the spectrum is broad but does not fluctuate. This can be done by frequency modulating a cw seed laser so the sidebands and carrier all match longitudinal modes of the signal wave in the OPO. Such an FM OPO would also have applications in FM-modulation absorption measurements, including remote sensing.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 225061
- Report Number(s):
- SAND--95-2849C; CONF-960642--3; ON: DE96004304
- Country of Publication:
- United States
- Language:
- English
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