Tunable single- and double-frequency diode-pumped Nd:YAG lasers

An Nd:YAG 1-cm-long crystal has been used as the active medium for tunable single- and double-frequency lasers with a metallic absorbing thin-film selector. Cobalt and chromium thin films (210-nm thickness) were used for mode number and frequency control. The laser with a short cavity (25 mm) provid...

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Bibliographic Details
Published in:IEEE journal of quantum electronics 1997-08, Vol.33 (8), p.1417-1423
Main Authors: Peshko, I., Jabczynski, J.K., Firak, J.
Format: Article
Language:English
Subjects:
Chromium
Cobalt
Diode-pumped lasers
Diodes
Doped-insulator lasers and other solid state lasers
Exact sciences and technology
Frequency control
Fundamental areas of phenomenology (including applications)
Laser modes
Laser tuning
Lasers
Optics
Physics
Power lasers
Pump lasers
Transistors
Tunable circuits and devices
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Summary:An Nd:YAG 1-cm-long crystal has been used as the active medium for tunable single- and double-frequency lasers with a metallic absorbing thin-film selector. Cobalt and chromium thin films (210-nm thickness) were used for mode number and frequency control. The laser with a short cavity (25 mm) provided slow smooth tuning up to 6 GHz, the frequency chirp up to 4 GHz with repetition rate about 0.5 kHz and hop tuning over 150 GHz at a maximum pump power of 1.8 W. 520 mW of single-frequency output power was achieved. Double-frequency operation with a space of 1.5-2.5 GHz was realized in a laser with cavity length up to 100 mm.
ISSN:0018-9197
1558-1713
DOI:10.1109/3.605565