Toptica Photonics AG - DL 100

Principle of operation
The excellent performance of the DL 100 results from an extended cavity laser set-up using a very rugged design. Optical feedback into the laser diode from the first order of a grating establishes a new "extended resonator" between the rear facet of the laser diode and the spectrally selective grating. Thus the linewidth is drastically reduced and the wavelength of the laser diode may be controlled by tilting the grating (within the gain profile of the particular laser diode chosen). While one part of the beam is fed back, the zero order reflection from the grating can be used for an experiment. Micrometer screws enable manual coarse tuning, while precise scans without mode hops are performed by a piezo actuator. Flexible full metal joints provide rigid and repeatable control of the laser beam collimation and the feed back level of the grating, and determine the coarse wavelength selection. Active temperature control with a Peltier cooler (TEC) connected to the DTC 110 Temperatur Control minimizes slow thermal drifts of the diode laser resonator. For ultra-low noise operation of the DL 100 the Current Control DCC 110 is recommended. In addition, ultra-low drift versions of the DL 100 using Invar Steel and Zerodur gratings are available.
 
Modular design
The set-up of the diode laser head DL 100 consists of a mounting base doubly serving as a heat sink, a Peltier cooler for active temperature control, a diode laser base plate, a laser diode holder with collimator and a grating mount with a Piezo actuator for precise tuning. The laser diode itself can be changed easily by replacing the laser diode holder without dismantling the set-up. The control and supply units are designed as modular plug-ins which can be combined to meet any application requirement. Other modules like Scan Controls, HV-Amplifiers, Lock-in, PDD and PID regulators complete the modular electronic set-up.
 
Reasonably priced
The Diode Laser Series DL 100 with the Diode Control Unit DC 110, the Diode Current Control DCC 110 and the Diode Temperature Control DTC 110 is your passport into the "World of Diode Lasers". With careful attention payed to passive mechanical stability, low thermal expansion and drifts during construction and design, excellent performance of the DL 100 Series can be guaranteed at an affordable price.