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Performance of nd:yag laser on different operating temperature

Adnan, Nurul Nadia and Bidin, Noriah (2018) Performance of nd:yag laser on different operating temperature. In: Optical Fiber Laser Technology. Penerbit UTHM, pp. 95-104.

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Abstract

In a typical laser resonator, optical elements such mirrors and beam splitters show no variation of optical properties over a wide range of temperatures. Stimulated emission cross section will depend on the temperature which affects the lasing performance such as output power, threshold and saturation intensity. Singh [1] and Kushida [2] have been studied in the room temperature stimulated emission cross section of Nd: YAG crystals and spectrum properties. The threshold and slope efficiency of Nd: YAG crystals at temperature ranges between 30 – 300 K have been reported [3]. The absorption and emission spectra, stimulated emission cross section and radiative lifetime of Nd:YAG crystals was investigated by Dong et al.[4]. They investigated at various doping concentration with 1, 2 and 3 at. % Nd3+ with the temperature ranges 70 to 300 K. The linewidth and thermal shifts of several lines in Nd3+:YAG crystals have been measured by Kushida. Xing [5] also report similar works. They report thermal shift of the all spectral lines from 4F3/2 to 4I11/2 in Nd: YAG laser for temperature ranges of 20°C to 200°C. They also studied the shift changes between Stark level R1 and R2. Sadar et.al. [6] investigated the thermal effects on the linewidth positions and line shift of the 933.6 nm and 1057.3 nm lines of Nd3+ doped lanthanum lutenium gallium garnet (LLGG) crystals. The long pulse and Q-switched temperature dependent were investigated at 1064 nm wavelength [7]. The temperature ranges in between -60 to 60°C, the effects of temperature on the laser threshold, laser output energy and slope efficiency was investigated. In design Q-switched and free running solid state laser this works is useful if the laser operates at different temperatures without damaging intracavity optics. The spectroscopic properties of Nd: YAG will be studied which will lead estimation of emission cross section and laser performance through variable temperature.

Item Type: Book Section
Subjects: T Technology > T Technology (General)
Depositing User: Mr Abdul Rahim Mat Radzuan
Date Deposited: 31 Oct 2019 02:41
Last Modified: 31 Oct 2019 02:41
URI: http://eprints.uthm.edu.my/id/eprint/11850
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