AOTFs are electronically-controlled bandpass optical filters that utilize a birefringent crystal. As changes in acoustic frequency alter its diffraction properties, rapid wavelength tuning becomes possible. AOTFs can be utilized for many different applications, including spectral imaging and lidar sounding. Unfortunately, their dependence on RF drive power places a constraint on them that limits their usefulness. …
Acoustic Optic Deflectors (AODs) offer laser scanning microscopy an effective alternative to mechanical scanners in terms of high-speed imaging without mechanical wear and tear, noise pollution or drift issues. AODs allow high-speed nonmechanical imaging at higher frequencies with no wear-and-tear issues associated with mechanical scanners – an advantage not found with mechanical scanners. AODs rely …
How Do Acoustic Optics Deflectors Work in Laser Scanning Microscopy? Read More »
Acoustic-optic devices manipulate light through mechanical waves interacting with a medium. Acoustic waves expanded and compressed within this supporting medium cause changes to optical refractive index. Acousto-optic devices have many uses in laser Q-switching, telecom and spectroscopy applications; however, their limitations for high power laser use must be considered carefully. 1. Frequency Dependence Frequency dependence …
Limitations of Acoustic-Optic Devices in High-Power Laser Applications Read More »
Acousto-optic interaction is widely utilized to control electromagnetic radiation parameters, including its amplitude, phase, frequency, intensity and polarization of light beams. Acousto-optic devices such as modulators, deflectors and tunable filters are increasingly in use and require various acousto-optic materials that correspond with different light intensities. Laser Technology No matter if it’s for reading Blu-Rays and …
Future Developments in Acoustic Optics and Its Applications Read More »
Acousto-optic frequency shifters play a vital role in laser spectroscopy. These devices alter the frequency of an optical beam based on Doppler shift caused by interaction between crystals and drivers, changing its frequency accordingly. These devices can be utilized for various applications, including Q-switching and mode locking for pulsed laser systems, ultrafast frequency pulse pickers …
The Importance of Acousto-Optic Frequency Shifters in Laser Spectroscopy Read More »
Optic wavefronts can be quickly focused and tilted using acousto-optic deflectors (AODs), powered by nonlinear acoustic drive frequencies, to enable high-speed 3D random access microscopy at up to 30-50kHz voxel rates. Acousto-optic tunable filters (AOTFs) offer an effective method for rapid wavelength control in electronic color lasers (ECLs). Unfortunately, AOTFs have some drawbacks, including their …
What are the advantages of using Acoustic-Optic Q-switching (AOQS) in lasers? By actively controlling its Q factor (loss), AOQS allows lasers to produce pulses of high intensity light at various frequencies. As opposed to electro-optic modulators, acousto-optic Q-switches offer greater durability and lower insertion loss compared to their electro-optic counterparts. Furthermore, these Q-switches can handle …
What Are the Benefits of Using Acoustic Optic Q-Switching in Lasers? Read More »
Many methods have been developed for steering laser beams for various technological applications, including micromachining, microscopy and optical wireless communications. Each approach has its own set of advantages and disadvantages, so choosing the best method for your application is critical. Optomechanical beam steering elements include AO deflectors, mirrors and liquid crystal (LC) phased arrays. Some …
How Does Acoustic Laser Beam Steering Compare to Other Methods of Laser Beam Steering? Read More »
Acousto-optic modulators (AOM) are used to modify the intensity of laser beams using electrical drive signals. Essentially, it works by changing the refractive index of crystal or glass material using sound waves oscillating under strain. There are various acousto-optic devices, each offering different characteristics; AOM is among the more frequently encountered types. The AOM consists …
What is an Acoustic Optic Modulator AOM and How Does it Work? Read More »
Acousto-optic tunable filter (AOTF) is an optical bandpass filter which operates using acousto-optic modulation. When an RF signal excite an attached piezoelectric transducer, vibration of its crystal of tellurium oxide (TeO2) vibrates. As the acoustic waves travel throughout a TeO2 crystal, periodic changes in its refractive index produce periodic variations which act like diffraction gratings. …
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