Spectroscopy and diode laser-pumped operation of Tm, Ho:YAG

Journal Article · Wed Jun 01 00:00:00 EDT 1988 · IEEE J. Quant. Electron.; (United States)

DOI:https://doi.org/10.1109/3.213· OSTI ID:7189826

Fan, T Y; Huber, G; Byer, R L; Mitzscherlich, P

Spectroscopic measurements and analysis of diode laser-pumped operations of Tm, Ho:YAG at 2.1 ..mu..m at room temperature have been performed. The peak effective stimulated emission cross section is measured to be 9 x 10/sup -21/ cm/sup 2/ at 2.091 ..mu..m and the upper state lifetime is 8.5 ms. Under diode laser pumping, thresholds of 4.4 mW of absorbed power and slope efficiency of 19 percent have been demonstrated. Calculations of threshold power are performed based on the spectroscopic measurements. An energy transfer upconversion process is identified which leads to a sublinear rise in upper state population with pump power.

• Research Organization: M.I.T. Lincoln Lab., Lexington, MA (US)
• OSTI ID: 7189826
• Journal Information: IEEE J. Quant. Electron.; (United States), Vol. 24:6
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
SOLID STATE LASERS
SPECTROSCOPY
CALCULATION METHODS
CROSS SECTIONS
ENERGY TRANSFER
HOLMIUM
PHOTON EMISSION
PUMPING
THULIUM
ELEMENTS
EMISSION
LASERS
METALS
RARE EARTHS
420300* - Engineering- Lasers- (-1989)