Ti:Sapphire (Ti:Sa) Crystal: Properties Study and Application

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Inorganic Crystalline Materials".

Deadline for manuscript submissions: closed (30 December 2021) | Viewed by 3802

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Guest Editor
Center for Extreme Ultraviolet Science and Technology, Colorado State University, Fort Collins, CO 80523-1320, USA
Interests: ultra-high peak power lasers; high power lasers; laser physics; optics
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Co-Guest Editor
School of Engineering, University of Applied Sciences and Arts Northwestern Switzerland, 5210 Windisch, Switzerland
Interests: ultrafast lasers; femtosecond lasers; solid-state lasers; multiphoton imaging; OCT; micro-machining
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Co-Guest Editor
ELI-ALPS, ELI-HU Non-Profit Ltd., Wolfgang Sandner utca 3, 6728 Szeged, Hungary

Special Issue Information

Dear Colleagues,

We would like to invite you to publish your next research study in an upcoming Special Issue of “Crystals” journal. You are also welcome to review articles in the area of development and the production of Ti:Sa crystals,  studying their properties and applications in the lasers and laser systems.

After the first publication devoted to the Ti:Sa properties investigation in 1985 (Peter Moulton), significant progress has been made in the research of the properties, size increasing, shape evolution, dopping, FOM, etc. of these crystals.

Ti:Sa, used as a working horse in chirped pulse amplification (CPA) laser systems, has resulted in several world record parameters of light pulses, such as power (10-20PW), intensity (1023W/cm2), pulse duration (few fs), and so on. Moreover, the development and investigation of this type of laser systems brought the Nobel Prize to a group of researchers two years ago (Gerard Mourou and Donna Strickland).

The next generation of CPA systems with Ti:Sa crystals supposes to increase not only ultra-high peak power and intensity, but also the repetition rate, which is very important for industrial applications. Thin discs and slabs of Ti:Sa crystals with corresponding parameters modification are required for the successful realisation of these plans.

Thus, we are expecting a large interest in this issue in the engineering and scientific community and inviting original contributions containing new results in the fields of Ti:Sa crystals properties investigation, growth technology, Ti:Sa lasers (oscillators and amplifiers), and laser systems on a base of Ti:Sa crystals. The journal considers theoretical and experimental research in areas ranging from the fundamental properties of crystals to technology and applications.

Dr. Vladimir Chvykov
Guest Editor

Prof. Dr. Bojan Resan
Dr. Roland Nagymihaly
Co-Guest Editors

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Keywords

  • Ti:Sa crystals properties
  • Ti:Sa crystals growth technology
  • Ti:Sa lasers (oscillators)
  • Ti:Sa amplifiers
  • Ti:Sa laser systems

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Published Papers (1 paper)

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Review

13 pages, 51806 KiB  
Review
Ti:Sa Crystals in Ultra-High Peak and Average Power Laser Systems
by Vladimir Chvykov
Crystals 2021, 11(7), 841; https://doi.org/10.3390/cryst11070841 - 20 Jul 2021
Cited by 4 | Viewed by 2869
Abstract
In this paper, Ti:Sa amplifiers with crystals of the different geometries are discussed. Benefits of using this active medium for a thin disk (TD) and slab amplifiers are evaluated numerically and tested experimentally. Thermal management for amplifiers with multi-kW average power and multi-J [...] Read more.
In this paper, Ti:Sa amplifiers with crystals of the different geometries are discussed. Benefits of using this active medium for a thin disk (TD) and slab amplifiers are evaluated numerically and tested experimentally. Thermal management for amplifiers with multi-kW average power and multi-J pulse energy has been demonstrated. The presented numerical simulations revealed the existing limitations for heat extraction in TD geometry in the sub-joule energy regime for higher repetition rate operation. Geometry conversion from TD to thin-slab (TS) and cross-thin-slab (XTS) configurations significantly increases the cooling efficiency with an acceptable crystal temperature for pump average power values up to few kW with room temperature cooling, and up to tens of kW with cryogenic cooling. The abilities to attain 0.3 J output energy and a greater than 50% extraction efficiency were demonstrated with a repetition rate exceeding 10 kHz with room temperature cooling and one order more of a repetition rate with cryogenic conditions with pulsed pumping. Direct diode pumping simulated for CW regimes demonstrated 1.4 kW output power with 34% extraction efficiency using room temperature cooling and more than 10 kW and ~40% efficiency with cryogenic cooling. Full article
(This article belongs to the Special Issue Ti:Sapphire (Ti:Sa) Crystal: Properties Study and Application)
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