Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 3675-3685 |
| Number of pages | 11 |
| Journal | Applied Optics |
| Volume | 44 |
| Issue number | 18 |
| DOIs | |
| Publication status | Published - Jun 2005 |
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Keywords
- instrumentation
- measurement
- metrology
- optical design
- lasers
- laser optics
- diode lasers
- tunable lasers
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Wide-bandwidth mode-hop-free tuning of extended-cavity GaN diode lasers. / Hult, J.; Burns, I.S.; Kaminski, C.F.
In: Applied Optics, Vol. 44, No. 18, 06.2005, p. 3675-3685.Research output: Contribution to journal › Article
TY - JOUR
T1 - Wide-bandwidth mode-hop-free tuning of extended-cavity GaN diode lasers
AU - Hult, J.
AU - Burns, I.S.
AU - Kaminski, C.F.
PY - 2005/6
Y1 - 2005/6
N2 - We present a new approach for extended-cavity diode-laser tuning to achieve wide mode-hop-free tuning ranges. By using a multiple piezoactuated grating mount, the cavity length and grating angle in the laser can be adjusted independently, allowing mode-hop-free tuning without the need for a mechanically optimized pivot-point mount. Furthermore, synchronized diode injection-current tuning allows diode lasers without antireflection coatings to be employed. In combination these two techniques make the construction of a cheap, efficient, and easily optimized extended-cavity diode laser possible. A theoretical analysis is presented for optimal control of piezoactuator displacements and injection current to achieve the widest possible mode-hop-free tuning ranges, and a comparison is made with measurements. The scheme is demonstrated for blue and violet GaN lasers operating at similar to 450 nm and similar to 410 nm, for which continuous tuning ranges exceeding 90 GHz have been achieved. Examples of applications of these lasers are also given.
AB - We present a new approach for extended-cavity diode-laser tuning to achieve wide mode-hop-free tuning ranges. By using a multiple piezoactuated grating mount, the cavity length and grating angle in the laser can be adjusted independently, allowing mode-hop-free tuning without the need for a mechanically optimized pivot-point mount. Furthermore, synchronized diode injection-current tuning allows diode lasers without antireflection coatings to be employed. In combination these two techniques make the construction of a cheap, efficient, and easily optimized extended-cavity diode laser possible. A theoretical analysis is presented for optimal control of piezoactuator displacements and injection current to achieve the widest possible mode-hop-free tuning ranges, and a comparison is made with measurements. The scheme is demonstrated for blue and violet GaN lasers operating at similar to 450 nm and similar to 410 nm, for which continuous tuning ranges exceeding 90 GHz have been achieved. Examples of applications of these lasers are also given.
KW - instrumentation
KW - measurement
KW - metrology
KW - optical design
KW - lasers
KW - laser optics
KW - diode lasers
KW - tunable lasers
U2 - 10.1364/AO.44.003675
DO - 10.1364/AO.44.003675
M3 - Article
VL - 44
SP - 3675
EP - 3685
JO - Applied Optics
JF - Applied Optics
SN - 1559-128X
IS - 18
ER -