公开(公告)号：AU2002256194A1

公开(公告)日：2002-10-28

申请号：AU2002256194

申请日：2002-04-11

Applicant: AXSUN TECH INC

Inventor： KUZNETSOV MARK E

IPC: H01S3/08 ,  H01S5/10 ,  H01S5/14 ,  H01S5/183 ,  G02B26/08 ,  H01S3/086 ,  G01J3/26

Abstract: An optical resonator including is designed is to degrade the ability of the resonator to support suppress higher order transverse spatial modes. The inventive optical resonator forces Higher higher order transverse modes to be fundamentally unstable in the inventive optical resonator, ultimately achieving ultimately to achieving single transverse mode resonator operation. Specifically, the bounded phase deflection mirror shape or intracavity lens profile is tailored to confine the fundamental mode while rendering the higher order modes unstable. This has application in MEMS/MOEMS optical resonator devices by suppressing the side modes and increasing the side mode suppression ratio (SMSR), as well as improving SMSR tolerance to device external alignment, for example. This also has application to achieving single transverse mode operation in laser resonators, such as in semiconductor vertical-cavity surface-emitting lasers (VCSEL).

公开(公告)号：AU2002236831A1

公开(公告)日：2002-08-06

申请号：AU2002236831

申请日：2002-01-22

Applicant: AXSUN TECH INC

Inventor： FLANDERS DALE C ,  WHITNEY PETER S ,  KUZNETSOV MARK E

IPC: G01J9/02 ,  H01S5/06 ,  H01S5/0687 ,  H01S5/14 ,  G02B27/28

Abstract: A wavelength measurement system uses birefringent material waveplate, thereby producing a substantially sinusoidal spectral response. As a result, the responses of multiple birefringent filters can be combined to yield a filter system with a periodic frequency response that has an additive wavelength resolution that is spectrally stable. That is, the wavelength measurement system does not have regions where wavelength resolution is degraded. In one implementation, a waveplate system 112 is used, placed between two blocks of birefringent material 110 and 114 . A quadrant detector 116 is used to detect the intensities of the resulting four beams.

公开(公告)号：AU4155802A

公开(公告)日：2002-05-27

申请号：AU4155802

申请日：2001-10-24

Applicant: AXSUN TECH INC

Inventor： FLANDERS DALE C ,  KUZNETSOV MARK E

IPC: H01S5/026 ,  H01S5/06 ,  H01S5/0687 ,  H01S5/14

Abstract: A semiconductor tunable laser system includes a tunable Fabry-Perot cavity and a cavity length modulator, which controls an optical length of the cavity at least over a distance corresponding to the spacings between the longitudinal modes of the laser cavity. Thus, the tunable Fabry-Perot cavity allows the laser cavity to have gain at the desired wavelength of operation while the cavity length modulator tunes the cavity length such that a longitudinal cavity mode exists at the desired wavelength of operation. Also, in one embodiment, a wavelength locker system is further provides that has a differential wavelength filter, e.g., stepped etalon, and a multi-element detector, e.g., a quad-detector. The controller then modulators the Fabry-Perot cavity to control the wavelength in response to the signal received from the multi-element detector.