Abstract
Single longitudinal mode (SLM) operation of a high repetition rate (1 kHz) nanosecond Type-II BBO optical parametric oscillator (OPO), pumped by the third harmonic (355 nm) of a Diode Pumped Solid State Laser (DPSSL), is demonstrated using a single intra-cavity etalon. Implementation of the cylindrical focusing configuration of the pump beam along with its double passing geometry through the nonlinear OPO crystal has facilitated a low threshold (~0.7 mJ/pulse @355 nm) operation with narrow spectral linewidth (~150 GHz) output. Operations of the OPO at such a low threshold has enabled to maneuver insertion of an intra-cavity etalon for further reducing the spectral linewidth, which allows the OPO to provide SLM lasing output over the spectral range 500–600 nm. The spectral characteristics of the SLM OPO are studied in detail. The time-averaged spectral linewidth of the SLM OPO is measured to be less than 250 MHz.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
