Abstract
A variant of the Hänsch–Couillaud technique for locking the pump laser
frequency to a cavity-enhanced optical frequency doubler is presented.
In contrast to the original scheme in which the pump laser light
reflected by the enhancement cavity is monitored, the error signal for
locking is obtained by polarization analysis of the light transmitted by
the cavity. The cavity serves as a spectral and spatial filter for the
pump beam, making the transmission-mode locking method particularly
useful if the beam quality is poor. Experimental validation of the
method is demonstrated by generating more than 190 mW of stable 461 nm
light from a cavity-enhanced frequency doubler that is pumped by a diode
laser system.
Original language | English |
---|---|
Pages (from-to) | 897-908 |
Journal | Applied Physics B: Lasers and Optics |
Volume | 104 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2011 |
MoE publication type | A1 Journal article-refereed |
Keywords
- lasers