All-Solid-State Tunable (Cr2+) Laser

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Abstract:

We investigated the spectroscopy and laser performance of Cr2 ions doped into II-VI semiconductors. Cr2 ions in CdSe exhibited strong broadband absorption in the 1.5-2.4 micron band peaked at 1.9 microns. Broadband fluorescence was present in the 1.8-2.8 micron region with a 6 microsecond lifetime in the 60-300 K temperature range. We demonstrated pulsed lasing of Cr2CdSe using a 1 kHz, Q-switched, 2.05-micron, Tm, HoYLF pump laser. The Cr2CdSe laser produced 500 mW of broadband output centered at 2.6 microns with 48 absorbed power conversion efficiency. With a larger pump beam to prevent coating damage, 815 mW was demonstrated. Tuning over the 2.3-2.9 micron range was demonstrated using a grating as the tuning element with 350 mW average power at the peak of the tuning curve.

Author(s):
Schepler, Kenneth L. ; Mckay, Jason
Author Organization(s):
AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH SENSORS DIRECTORATE
Descriptive Note:
Final rept. 20 Feb 1997-31 May 1999
Pagination:
0029

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AFRL-SN-WP-TR-1999-1104
Task Number(s):
AA
Project Number(s):
2301
Monitor Series:
TR-1999-1104, AFRL-SN-WP
 Subject Terms
Joint Capability Areas:
JCA_1.2.7_Experimentation; JCA_5_Command and Control
Modernization Areas:
Directed Energy; Quantum Science and Computing
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
*SOLID STATE LASERS, *IONS, *TUNABLE LASERS, *CHROMIUM, CONVERSION, LASER PUMPING, Q SWITCHING, FLUORESCENCE, DAMAGE, SEMICONDUCTORS, COATINGS, BROADBAND, TUNING, ABSORPTION, GROUP II VI COMPOUNDS, HOLMIUM, THULIUM, CADMIUM SELENIDES
Field(s)/Group(s):
Lasers and Masers
Keyword(s):
POWER CONVERSION, PE61102F, WUAFRL2301AA03
Report Date:
1999 Jul 01
Creation Date:
2000 Jun 07