Group-velocity mismatch compensation in continuous-wave lasers mode locked by second-order nonlinearities
- Dipartimento di Fisica del Politecnico, Centro di Elettronica Quantistica e Strumentazione Elettronica del Consiglio Nazionale delle Ricerche, Piazza L. Da Vinci 32, 20133 Milano (Italy)
A group-velocity mismatch compensation technique has been applied to cw Nd:YAG and Nd:YLF lasers mode locked by use of the nonlinear reflectivity or the nonlinear phase shift that arises from the intracavity parametric interaction of a pulse with its second harmonic. An intracavity birefringent plate, which delays the fundamental wavelength pulse with respect to the second-harmonic pulse, compensates for the opposite effect that arises in the second-harmonic crystal. Compensation reduces the pulse duration by a factor of 2 and allows pulses of 5.1 and 5.9 ps to be obtained from Nd:YLF and Nd:YAG lasers, respectively. {copyright} 1995 Optical Society of America
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 168209
- Journal Information:
- Optics Letters, Journal Name: Optics Letters Journal Issue: 17 Vol. 20; ISSN OPLEDP; ISSN 0146-9592
- Country of Publication:
- United States
- Language:
- English
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