In-Fiber Acousto-Optic Devices
features are lost. Early demonstrations of active Q-switching or mode-locking fiber lasers were based on the use of bulk optics modulators, such as electro-optic or acousto-optic modulators. However, the procedure is not without its drawbacks. For example, it
Hybrid Q-switched Tm:YAG ceramic laser with acousto-optic …
We report on a hybrid Q-switched Tm:YAG ceramic laser emitting near 2 µm with an acousto-optic modulator (AOM) and a Cr: ... For hybrid Q-switching, combined AOM and Cr:ZnSe absorber in the laser cavity, pulse …
Acousto-optic Q-switches store laser energy
FIGURE 1. The variety of acousto-optic Q-switches available can accommodate flashlamp- and diode-pumped lasers. One of several techniques available for modulating the output beam of a laser is Q-switching. Modulation can be done using either electro-optic (E-O) or acousto-optic (A-O) materials (see Laser Focus World, May 1996, p. 127).
Photonics | Free Full-Text | Acousto-Optic Q-Switched Ho:YLF …
Nanosecond pulsed solid-state lasers at 2 μm eye-safe region generated by acousto-optic Q-switching operation have become irreplaceable components in …
Watt-level acousto-optically Q-switched Pr:YLF laser at 639 nm
We present a study on a watt-level acousto-optically Q-switched Pr:YLF laser at three different repetition rates (10 kHz, 20 kHz, and 50 kHz) for the first time, to the best of our …
Highly efficient dual-wavelength acousto-optically Q-switched …
Q-switching, including active Q-switching and passive Q-switching, is an important technology for producing high-energy short-pulse lasers. Benefiting from the emergence …
(PDF) A 2.79-μm Efficient Acousto-Optic Q-switched …
We fabricate a novel, to the best of our knowledge, acousto-optic Q switch in the 3-micron wavelength range using a longitudinal acoustic mode in a lithium niobate (LiNbO 3 ) crystal. The...
Hongyang WANG | Doctor of Engineering | Chinese Academy of …
We propose a gain control method for acousto-optic Q-switched lasers. The laser in single-pulse mode can be converted into a double-pulse mode with adjustable subpulse intervals and energy ratios.
Q-switching
Q-switching, sometimes known as giant pulse formation or Q-spoiling, is a technique by which a laser can be made to produce a pulsed output beam. The technique allows the production of light pulses with extremely high ( gigawatt ) peak power, much higher than would be produced by the same laser if it were operating in a continuous wave (constant …
Efficient acousto-optic Q switching of Er:YSGG lasers at 2.79 …
A flash-lamp-pumped Er:Cr:YSGG laser at 2.79-microm wavelength has been acousto-optically Q switched and limits of single-pulse operation with the given acousta-optic diffraction efficiency have been determined. A flash-lamp-pumped Er:Cr:YSGG laser at 2.79-microm wavelength has been acousto-optically Q switched. …
Understanding Actively Q-Switched Solid-State Lasers
In the case of active Q-switching, an electrically controlled modulator is used, normally an acousto-optic or electro-optic modulator. Storing …
(PDF) 2.79-μm high peak power LiNbO3 acousto-optic Q …
acousto-optic Q-switch achieved stable Q-switching characteristics at 60 Hz in the designed plane-convex resonator. The maximum pulse energy was 8.5 mJ, the …
Highly efficient acousto-optic modulation using nonsuspended …
In this work, based on a nonsuspended thin-film lithium niobate-chalcogenide glass hybrid Mach–Zehnder interferometer waveguide platform, we propose and demonstrate a built-in push-pull acousto ...
Efficient acousto-optic Q switching of Er:YSGG lasers at 2.79-µm …
Abstract. A flash-lamp-pumped Er:Cr:YSGG laser at 2.79-µm wavelength has been acousto-optically Q switched. The Q -switched pulse energy and duration depend on …
Q-switching of an all-fiber ring laser based on in-fiber acousto-optic …
Active Q-switching of an all-fiber ring laser utilizing a novel in-fiber acousto-optic tunable bandpass filter (AOTBF) is reported. The transmission characteristics of the AOTBF are controlled by amplitude modulation of the acoustic wave; the device exhibits a 3-dB power insertion loss, 0.91-nm optical bandwidth, and 28-dB nonresonant …
High-peak-power and wavelength tunable acousto-optic Q …
We demonstrate Q-switching operation of a single-moded mid-infraredEr 3+-doped ZBLAN (Er:ZBLAN) fiber laser based on an acousto-optic modulator. The …
Study of an acousto-optic Q-switched double pulse output Pr:YLF …
In this paper, we obtained a blue LD pumped Pr:YLF acousto-optic Q-switched double pulse laser with 639 nm double pulse output. The acousto-optic Q …
Acousto-Optic Q-Switches
The Acousto-optic Q-switches (AOQS) are a type of Q-switch designed for laser Q-switching applications. At the beginning of pumping, the AOQS increases the diffraction …
Hybrid Q-switched Tm:YAG ceramic laser with acousto-optic …
Active Q-switching was obtained by inserting a Brewster-cut acousto optic modulator. This setup delivered an average power of 18.6 W, with a maximum of 5.6 mJ energy per pulse with a pulse ...
Adjustable double-pulse laser output based on diffraction loss modulation of acousto-optic Q-switching …
We propose a gain control method for acousto-optic Q-switched lasers. The laser in single-pulse mode can be converted into a double-pulse mode with adjustable subpulse intervals and energy ratios.
