Article

Pramana

, Volume 44, Issue 3, pp 237-248

Analysis of mode-locked internally frequency doubled broad-band continuous wave lasers

  • H K T KumarAffiliated withDepartment of Physics, Siddaganga Institute of Technology
  • , K Appaji GowdaAffiliated withDepartment of Physics, Siddaganga Institute of TechnologyDepartment of Physics, Bangalore University
  • , K P J ReddyAffiliated withDepartment of Physics, Siddaganga Institute of TechnologyDepartment of Aerospace Engineering, Indian Institute of Science

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access

Abstract

Closed-form analysis of pulse evolution in the transient regime in an actively modelocked internally frequency doubled broad-band continuous wave laser is presented. The analysis enables investigation of the effect of nonlinear crystal inside the laser cavity on mode-locked pulse parameters at the fundamental frequency. It is shown that the presence of internal second harmonic crystal broadens the fundamental mode-locked pulse while accelerating the approach of the system to steady-state. The dependence of pulse parameters on the bandwidth of the tuning element, modulation depth of the active mode-locker and conversion efficiency of the frequency doubler is presented in detailed graphical form.

Keywords

Broad-band lasers mode locking Picosecond pulses frequency-doubling pulsewidth-band-width product

PACS Nos

42.55 42.60 42.65