Infra-Red Amplification

Principles

A frequency doubled, injection seeded Nd:YAG laser is used to pump a PrecisionScan dye laser, operated in the red spectral range. The dye laser output beam and a fraction of the residual 1064 nm pulse from the Nd:YAG are mixed in a temperature stabilized LiNbO3 crystal for difference frequency generation. The general IR beam passes a second LiNbO3 crystal, pumped by the remaining residual 1064 nm pulse, and used as an optical parametrical amplifier. The OPANIR amplifies the initial IR beam, and generates signal and idler beam. Due to injection seeding, the resulting linewidth is governed by the configuration of the dye laser resonator.

OPANIR Optical Layout

Tuning Range

OPANIR Tuning Curves

Energy Output

Pump Laser Dye Laser Output Energy
IR energy output at 2 µm (maximum Pyridine 1), combined energy of signal and idler pulse. See tuning curves for output energies at other wavelengths. Values for injection seeded pump lasers.
550 mJ @ 532 nm PrecisionScan-G-18 28 mJ
550 mJ @ 532 nm PrecisionScan-D-18 26 mJ
430 mJ @ 532 nm PrecisionScan-G-18 24 mJ
430 mJ @ 532 nm PrecisionScan-D-18 22 mJ

 

General Characteristics

Maximum Pump Energy 550 mJ 532 nm, 10 Hz repetition rate recommended
Seeder for Nd:YAG Laser Imperative
Dye Laser Amplifier Enhanced Beam Profile
Crystal Tuning Mode Look-Up Table
IR Beam Polarization Horizontal, > 98%
IR Beam Diameter (typical) 5 – 9 mm, depending on laser configuration
IR Beam Divergence < 0.5 mrad
IR Linewidth < 1.1 x Dye Laser Linewidth
Tuning Range DFA-2400-T 1.4 – 2.4 µm
DFA-2870-T 1.8 – 4.2 µm gap at 2830 nm
DFA-3800-T 1.8 – 4.2 µm gap at 2870 nm

Dimensions

OPANIR Dimensions

All Dimensions in mm. Specifications are subject to change without notice.

Literature & Downloads

Datasheet Infra-Red Amplification