Abstract There has been a recent surge in interest for optical satellite communication (SatCom) utilizing lasers. It is clear to see why, as SatCom capable of higher speed, lighter weight, directionality, and efficiency versus their radio-based counterparts. Research into focused on devices operating the short-wave infrared (SWIR), which due maturity commercial availability such component’s thanks significant development terrestrial telecommunications networks. However, SWIR performs poorly...

In this paper, we report a theoretical systematic study of continuous wave intracavity backwards optical parametric oscillators based on periodically poled lithium niobate (PPLN) for mid-infrared (mid-IR) light generation. We the effects varying different cavity parameters including nonlinear crystal length, size, pump laser diode spot output coupler radius, and loss values power threshold proposed mid-IR laser. The physical phenomena are included in model depletion due to conversion...

Mid-IR light detection based on intracavity upconversion using a compact structure has been studied experimentally and theoretically. The mid-IR detector consists of 47.5 mm MgO doped periodically poled lithium niobate crystal placed in resonant cavity 1064 nm diode-pumped Nd:YVO 4 laser to enhance efficiency. generated is mixed with mid-infrared source emitting at 3469 an dichroic mirror. This produces short wave infrared 814.2 via sum frequency generation (SFG). upconverted overlaps the...

We report a diode pumped solid state (DPSS) laser used for intracavity pump-enhanced difference frequency generation (DFG) to create 3.5 micron laser. Using 50 mm-long periodically poled lithium niobate (PPLN) crystal inside the cavity of an Nd:YVO4 at 1064 nm with 4.5 W pump power 808 nm, and 310 mW C-band signal 1529 up 31 mid-infrared output 3499 is obtained. The requires no active stabilization and/or locking, entire <8 cm in length. obtained corresponds black box efficiency...

In this paper, a novel approach to modelling intracavity second harmonic generation (SHG) in periodically poled MgO-doped lithium niobate (PPLN) is presented and verified against experimental results. This involves combining the coupled nonlinear wave equations with rate equation model for diode-pumped solid-state Nd:YVO 4 laser, taking into account both depletion of fundamental due energy conversion from SHG reduction within laser cavity loss as result process. It was shown that theoretical...

We report a diode-pumped solid-state (DPSS) laser used for intracavity pump-enhanced difference frequency generation (DFG) to create 3.5-micron laser. Using 50 mm-long periodically poled lithium niobate (PPLN) crystal inside the cavity of an Nd:YVO4 at 1064 nm with 4.5 W pump power 808 nm, and 310 mW C-band signal 1529 up 31 mid-infrared output 3499 is obtained. The requires no active stabilization and/or locking, entire <8 cm in length. obtained corresponds black-box efficiency 2.20%W−1,...

In this paper, a compact speckle reduction method utilizing vibrating lenses for laser beam scanning is proposed and demonstrated. The maximum efficiency was found to be 75.6% 81.25% 532 nm diode-pumped solid-state (DPSS) 520 diode (LD), respectively. minimum contrast ratio observed using our 0.11 the DPSS 0.06 LD. can provide with minimal power requirements, low implementation cost, no bending optical path of beam. Additionally, promising withstand high-power lasers use in high lumen...

In this paper, we report a new model for passively Q-switched intracavity optical parametric oscillators (IC-OPOs), using Cr:YAG as Q-switch crystal. The considers the effects of thermalization in Nd:YAG laser crystal, excited state absorption saturable absorber, nonlinear loss due to pump depletion thermal lens effect and mode overlap fields within calculated pulse width 1,064 nm light was 6.2 ns compared experimental result 6 ns, while signal wave have 1.75 2 ns. is shown accurately...

This study presents a compact intracavity difference-frequency generation (DFG) source designed for mid-infrared (mid-IR) applications. By optimizing overlap between the pump and signal beams, we obtained black-box efficiency (ηBB) of 3.4% W⁻1 maximum DFG output power 63 mW at wavelength 3437 nm 50 mm long periodically poled lithium niobate (PPLN) crystal. The mid-IR laser was systematically studied various PPLN lengths (29 mm, 40 mm), demonstrating extensive tunability across range...

Mid-IR light detection based on intracavity upconversion using a compact structure has been studied both experimentally and theoretically. The mid-IR detector consists of 47.5 mm MgO doped periodically poled lithium niobate crystal placed in resonant cavity 1064 nm diode-pumped Nd:YVO4 laser to enhance efficiency. generated is mixed with mid-infrared source emitting at 3469 an dichroic mirror. This produces short wave infrared 814.2 via sum frequency generation (SFG). upconverted overlaps...

Mid-IR light detection based on intracavity upconversion using a compact structure has been studied both experimentally and theoretically. The mid-IR detector consists of 47.5 mm MgO doped periodically poled lithium niobate crystal placed in resonant cavity 1064 nm diode-pumped Nd:YVO4 laser to enhance efficiency. generated is mixed with mid-infrared source emitting at 3469 an dichroic mirror. This produces short wave infrared 814.2 via sum frequency generation (SFG). upconverted overlaps...

Abstract In this paper, a systematic study of the relationship between nonlinear crystal length and intracavity second-harmonic generation (SHG) using MgO-doped periodically-poled lithium niobate (MgO:PPLN) is presented. The experimental results demonstrate maximum SHG power generated full-width at half (FWHM) crystal’s temperature tuning curve to optical crystal. It was shown that increases rapidly with increase MgO:PPLN length, reaching saturation (~ 2 mm), which much shorter than...

Link budgets for LEO to ground optical communication using state of the art MWIR and LWIR sources detectors were generated OptiWave’s OptiSystem simulation suite. The results show a link demonstration could be viable in next 5 years, while links are limited by detector technology. nonlinear optics discussed.

A novel tri-wavelength blending speckle reduction method was proposed and studied both experimentally theoretically. In the method, a 543 nm diode pumped solid state (DPSS) laser employed to cooperated with shorter wavelength 523 (LD) common 532 DPSS laser. Comparing traditional takes into account color space coverage of project system. It shown that contrast ratio (SCR) as low 3.3% achieved when power nm, light were set 4:1:1. The effect on gamut after use also investigated. found by using...

As optical satellite communication becomes a topic of interest for data (ex: 5G), there is need reliable and cheap ground based transceivers receivers. In this work, we are interested in the design fabrication coatings required to optimize performance 3.4-µm laser sources on difference frequency generation (DFG) PPLN crystal, from 1064 nm 1550 light.

A novel sum frequency generation (SFG) intracavity structure for detecting LWIR light via conversion to the SWIR band is presented. Simulation results using coupled nonlinear wave equations and a spatially dependent cavity model show that microwatt level power can be generated from milliwatt sources. Use of orientation-patterned semiconductors as medium also discussed.

Abstract In this paper, a systematic study of the relationship between nonlinear crystal length and intracavity second-harmonic generation (SHG) using MgO-doped periodically-poled lithium niobate (MgO:PPLN) is presented. The experimental results demonstrate maximum SHG power generated full-width at half (FWHM) crystal’s temperature tuning curve to optical crystal. It was shown that increases rapidly with increase MgO:PPLN length, reaching saturation (~2 mm), which much shorter than predicted...