Study of lasing on the {sup 4}F{sub 3/2} → {sup 4}I{sub 13/2} secondary transition of Nd{sup 3+} ions in a phase-conjugate Nd{sup 3+} : YAG laser
Lasing at a wavelength of 1.34 µm on the {sup 4}F{sub 3/2} → {sup 4}I{sub 13/2} secondary transition of Nd{sup 3+} ions in a phase-conjugate (PC) Nd{sup 3+} : YAG laser under four-wave mixing in a laser medium is theoretically and experimentally investigated. The influence of the amplified spontaneous emission at a wavelength λ = 1.064 µm on the parameters of phase-conjugate generation of the Nd{sup 3+} : YAG laser at λ = 1.34 µm under passive Q switching by a V{sup 3+} : YAG crystal using two-, three-, and four-loop open cavity schemes is analysed by mathematical simulation. It is shown that there is an optimal initial transmission of a passive Q switch (PQS), the value of which decreases with increasing number of cavity feedback loops. The generation in the Nd{sup 3+} : YAG laser at λ = 1.34 µm with an open PC multiloop cavity is experimentally obtained and studied for the first time. Emission in the form of a train of seven pulses with a total energy of 0.25 J and individual pulse energy and duration of 36 mJ and 150 ns, respectively, is obtained with an initial PQS transmission of 74 %. The angular divergence of the laser beam is found to be 0.7 mrad at quality factors M{sub x}{sup 2}=1.2 and M{sub y}{sup 2}=1.1. (paper)
- OSTI ID:
- 22876128
- Journal Information:
- Quantum Electronics (Woodbury, N.Y.), Vol. 47, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7818
- Country of Publication:
- United States
- Language:
- English
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