Multi-wavelength high-energy pulsed laser source

Period of Performance: 03/14/2008 - 09/22/2008

$70K

Phase 1 SBIR

Recipient Firm

Q Peak, Inc.
135 South Road Array
Bedford, MA 01730
Principal Investigator

Abstract

Q-Peak proposes to develop a multi-wavelength, high-energy, all solid-state source based on the combination of an efficient, high-energy, 1047-nm Nd:YLF laser, a tunable optical parametric oscillator (OPO) and a multi-wavelength Raman laser. The pulse-pumped, repetitively Q-switched, Nd:YLF Master Oscillator Power Amplifier (MOPA) system will provide 250-mJ, ~200-nanosecond pulses at 1047 nm with the pulse format and rate in accordance with the requirement to the temporal mode of operation. The Nd:YLF output will pass through a second-harmonic generation (SHG) crystal to be efficiently converted to green output at 523.5 nm. The green power will act as a pump for an LBO-based optical parametric oscillator (OPO), which generates two output beams, a signal and an idler. The signal output from the LBO OPO will be tunable in the near infrared (NIR) from 700 nm to 750 nm, by angular tuning the OPO nonlinear crystal, with pulse energy of ~ 50 mJ. The green power will also be used as a pump for a Raman laser. The Raman laser will provide pulsed, multiple-wavelength- output in the visible wavelength band from 550 nm to 600 nm with maximum pulse energy of ~50 mJ.